Cadillac northstar overheating causes.
Northstar Engines and System Technical Discussion.
Cadillac northstar overheating causes Cadillac Rear Main Seal Leak Symptoms. It's not for fuel savings by any stretch of the imagination. You need to determine if the water sounds are coming from the heater core or the HVAC housing. Stickys are threads marked with a push pin at the top of every forum main page - timeless info for owners of the vehicles in that forum. **Want to own the tools I use ?? Click on the amazon link below to get my top 5 Tools I use**Automotive Test Light- https://amzn. No bubbles in coolant res. 6 engine are the. Overheating is another cause but, theoretically, the Northstar is supposed to be able to run 50 miles without coolant (camel I've read so many of the posts here, and after a LOT LOT LOT of research (and LOTS of years enjoying the wonderful used Caddy market) I've never seen this directly addressed within the subject of overheated Northstars. This is horse shit. 2005 SRX 4. Please DO NOT attempt to re-register under a new username - that action will cause you to be banned from this site forever. I replaced the the radiator cap (16 psi), new radiator and put a new thermostat in it. Check around for leaks. thanks to all in advance!! fred Possibly a stuck PCV valve will cause excess oil to be scavaged from the crank case to the intake system and then burned. This Deville had a slow coolant leak & a history of overheating due to a failed water pum Overheating Northstar engine 2001 Deville. The 1997 - 1998 Northstars (primarily) suffered from cylinder block metallurgy problems and head bolt hole thread failures - leading to loose head bolts with resulting gasket failure. Northstar Engine Breakdown . The engine is designed to run on 4 cylinders and be air cooled by the other 4 cylinders. You and I both know this- it's just that the majority of Cadillac owners who've bought a used Northstar powered car won't know all of this. Re: 00 Cadillac Deville - Overheating, but coolant resivoir full? One tick past 12 o'clock is nowhere near overheating. Northstar overheating can lead to cracked valve covers or bad valve cover gaskets. i have filled the radiator with water and gone 20 miles with no problem, and i have filled it and made it 5 miles before it redlines. If it is full, you can rule out low coolant or a coolant leak, and skip the next section. huhnsolutions. engine over heating. i know that they were prone to overheating and head problems. Jump to Latest Clogged purge lines have been known to cause overhating. The head gasket is a crucial component that seals the gap between the engine block and the cylinder spiked the temp - resulting a false "overheating" warning - by shutting the engine off - the air pocket got "burped" - so coolant flow was restored around the temp sensor - and quickly displayed the correct coolant temp - and a compression test is next to useless in diagnosing a failed head gasket in a Northstar motor - What can cause the engine to overheat. 88,000 miles. It IS possible that that could be causing some of the overheating issues, but NOT the water sounds. Tags buick cadillac catera deville engine gasket northstar performance sts support. For more info, Google "cadillac forums northstar engine cooling purge line" or something close. If the head gaskets blow on 90% of the older This is a general question for all 4. i have a 97 sts w/northstar (wifes car) and it has been overheating alot lately. The car drives great on the highway and most short distances, but there have been 2 times where the engine has overheated (240 degrees or over) once while stuck in traffic after being on the highway, and the other in a drive-through. The fans work and the radiator is not I have a 2007 Cadillac SRX V6 AWD. The purge line has been blown out in the past and the thermostat has been replaced a couple years ago. Dont rely on PCM for code. Links Below: Cadillac Northstar engines are known for overheating. Your problem was not the thermostat or water pump. Car starts and idles fine. The first thing that you need to do is check your DTS’s overflow container. Got it a few miles to the mechanic. Show Less Full Forum Listing Old post however the issues with oil loss was covered as internal and external issues BUT the overheating issue was never addressed sufficiently IMO. If the line or bolt/nipple is clogged the system tends to develop air pockets and Overheated AGAIN?! Repair Cadillac Northstar Head Gaskets WITHOUT Inserts! Changing Your Coolant? You're Doing It Wrong. Engine Discussions It not only maintains the pressure of each cylinder's combustion, it also maintains pressure for the engine's oil and coolant systems as they circulate through the head. Sounds like yours had the pre-1999 coolant heated throttlebody 10. Northstar engine Reply 1: Stuck closed thermostat, inoperative cooling fans, internal leak from blown head northstar engine overheating thermostat, waterpump,radiator and motor all been replaced - Cadillac 1997 DeVille question idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating. There were 2 fails to properly clamp the heads down and keep the torque even and enough to prevent combustion gasses from entering cooling passages resulting in overheating. Start new topic; Recommended Posts. Other options are Norm's Inserts (www. All seems normal while driving, then the temperature goes to max, the message center display, "Engine Overheating A/c turned off, shut off engine" Message center also displays, "Change Engine Oil", even Re: 2000 sls overheating! Hi Dannysls2000 Warning: Technical Info below! All cooling systems work poorly without a thermostat installed! (It controls BOTH flow increase through the rad due to temperature AND maximum flow rate. Subscribe the car to www. Hello guys I need some major help. I have 1998 cadillac seville w/northstar motor started getting hot change the In 2000 Cadillac redesigned the rear main seal by pressing it into the block which solved the premature wear issues. Check your water pump the Northstar motor pumps exhaust gasses into the cooling system - this exhaust gas causes high pressure in the cooling system - and air pockets in the engine - resulting in overheating - and the loss of coolant - there is a special test called a BLOCK TEST - this is the DEFINITIVE TEST for head gasket failure in the Northstar motor - (ANY deviation from the original fluid blue color - even to light blue - is cause for concern. While that may be true most of the time, it pays to do your homework. You could have dislodged some crud in the system replacing the tank. Read the stickies in the Engines; Northstar forums. Is one time overheating it, or 2 or 3. A number of things can cause this to happen: 1) a bad thermostat that is stuck closed or partially closed, if your problem is sudden, I would buy an My cadillac seville sts is overheating, I have reasently changed the alternator, when I did that i removed the radiator hose, and drained the coolant. Save Share then a lack of coolant will cause overheating), the radiator itself for flow, and any and all hoses for even the tiniest pinhole can lead to eventual overheating. Northstar Overheating!!! HELP. One thing about the northstar, once you cut it open, the wound spreads to other areas quickly. I then change cylinder 7 coil pack with cylinder 1 (Remember this is You need to do a LOT of homework in here, Cadillac Tech Tips and Northstar Performance. Is it possible the radiator needs to be boiled out or replaced? What about cooling fan - is there a fan clutch? Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX, Escalade, LYRIQ, Vistiq, concept and future Current Problem – My 2002 Seville Northstar 4. However, the complexity of Northstar engines meant they quickly became notorious for head gasket failures. The 98 and 99 engines are the worst, statistically, for cylinder block head bolt hole thread failures leading to loss of head bolt clamping pressure - the cause of exhaust gasses in the coolant. may exhibit a condition in which they cylinder head bolts may become loose and cause Overheating Northstar. I noticed that only one radiator fan (drivers side) is coming on while the A/C is on (only drove is for 10 minutes today). I just checked it yesterday and took about a 50 mile trip in the vehicle, and the display had the same overheating message and change oil, A/C shut down and went into "limp" mode. WP's do not cause overheating. OK guys, I had an overheating Cad Eldorado, 1999. I would guess most old Cadillac NorthStar owners are like me – old farts who love their Cadillacs – in my opinion no Cadillac since the discontinuance of Northstar Engines and System Technical Discussion. Then go down to Discussions, Item Specific and wade through the pages of Cadillac Tech Tips, skimming threads of interest. Be aware of symptoms like rising temperature gauges, steam from the hood, or unusual noises, smells, or leaks. Unlike many engines, this thing was designed for sustained high rpm use and will run at 6000 rpm all day. I have a 98 cadillac deville with a northstar engine. This causes the head to lift slightly off of the block. Low engine oil; Oil dripping from back of the block; 3. It may be losing coolant and you can't explain where it's going. The most common reasons a Cadillac SRX is overheating are a coolant leak (water pump, radiator, hose etc. I have so far replaced the waterpump and thermostat, found a couple lines that were leaking and replaced them. Cadillac Northstar Engine Head Gasket Repair. Cadillac Vehicle Discussion. If the Northstar engine starts overheating,it'll shut down combustion in 4 cylinders at a time to pump air to cool the motor when it goes into the limp home mode. "Overheating" causes in a Northstar engine is mainly opinion and hearsay due to incomplete understanding of how and why the cooling system works as it does. LYRIQ, Vistiq, concept and future Cadillac models. Northstar, Cadillac, Computers, Electronics, Tools, Pools, PULL OUT of the block as you noted, the bolt holes need attention either timeserting or studs. At some point the coolant falls dangerously low, the water pump loses pumping action due to cavitation, and the engine overheats. Northstar overheating! 1009 Views 3 Replies 3 Participants Last post by eldorado1, Jun 29, 2005. My wife's car. Of course I eliminated all other possible causes of overheating first: having the radiator rodded out and flow tested; replacing the water pump; putting on a new 15 lb. The Northstar is advertised as a 100K no service engine, I believe it should be called a THROW AWAY engine. have used blue devil gasket sealant on it would appreciate any assistance anyone can offer Also, timeless info way up ^^^ in the top black bar - the Cadillac Technical Archive. Cadillac Northstar owners to those whose vehicle is overheating . Just bought a 1998 DeVille with 42,000 miles. 6L. It overheats sometimes when in traffic. History In February, my car overheated with steam coming out of the front of the hood on the passenger side. The "Angry Northstar Owner" will be banned from this website - multiple usernames are not permitted. so i filled it up again with water and some coolant, and it starts to overheat, also the fans didnt seem to work so i just connected them to the battery via a switch. But loves to overheat as speeds of 60 mph or higher. About once every 4 weeks, it overheats during normal driving. You might want to go to the Engines; Northstar forum and read the stickys on head gaskets, cooling system operation, fan controls and gauge indications. Seville and Eldorado Forum. Often when a Northstar overheats, a mechanic checks the cooling system and finds nothing wrong. Your car went into camel mode. As for the cadillac, the cat MAY have something to do with it, an exhaust shop only Here are some things about your Cadillac and what you should do to prevent Overheating and solve diagnose, repair, prevent your 1998 Cadillac Northstar GM en 97 northstar still overheating. Matter of fact, read the stickys in every thread of interest as well as the entire Cadillac Technical Archive way up ^^^ in the top black bar. When I run the heater around town (in Phoenix) Yikes! The car seems to run at regular temperature If you’re experiencing an overheating issue in your 2001 Cadillac DeVille, it’s crucial to identify the cause to prevent costly repairs or engine failure. I just purchased a '96 Deville that did exactly the same thing (display-wise) and when I stopped, the coolant was extremely low. Explore Our Forums. 6l V8 overheating need advice Northstar 4. Full Forum Listing. If you haven't changed the water pump drive belt tensioner pulley in the last 70,000 miles, do it yesterday. If ignored, overheating can lead to engine failure. I have a 2001 Cadillac deville northstar engine, which is overheating. Thanks" 1998 Cadillac Deville overheating There's a couple things that could cause it. Study up on the water pump drive assembly belt tensioner pulley. And how hot is hot to the point you know you definately without a doubt cooked your HG? I read alot on the General Cadillac Forums ; 2007 DTS Overheating - Bad pump or something else? 2007 DTS Overheating - Bad pump or something else? dts; water pump; overheating; Interests: Northstar, Cadillac, Computers, i have a 2007 cadillac dts with 112k miles on it . well last week my 2000 cadillac deville was overheating, found out it was the expansion tank cap and i of course replaced it, problem solved or so i thought. Dive into its history, performance, and common issues, and discover why it remains a symbol of American luxury. I'm in Chicago and I purposely drove the car in the midst of rush hour to test for overheating (it did not). Part of the problem is that many people (as well as "techs") automatically assume that an overheating Northstar has bad HG's. my curiosity is in what year did cadillac modify or "fix', or improve upon this problem. www. The Cadillac Northstar rarely exhibits typical blown head gasket symptoms The most common symptoms for a Northstar, are unexplained coolant loss & overheating. Add to quote; Share Only show this user. ), the radiator fan, or a failed thermostat. My friend has a 2001 Deville that has an overheating problem. Is that a northstar engine? Notorious for leaky heads - causes overheating. Use a good drop light and take a hard look at the coolant piping which runs along the right (rear) side of the engine. i just have a quick question regarding the northstar 4. Can't find the cause of my 97 Caddy DeVille v. by the way where is the water pump belt tensioner? thanks ranger. The car was at the dealer's where they changed the sensor and the thermostat but the problem continues. 6L V8 (LD8/L37) Report; I trust you mean what causes overheating in the Northstar? Pressure leaks or failure to maintain rated pressure > bad radiator cap, cracked tank, cracked radiator end tanks, crossover General Cadillac Forums ; Overheating Northstar--Kinda Overheating Northstar--Kinda. The issue is, many looking to get a used Cadillac with a Northstar can't verify that it has never overheated. Cause it did not lose a drop. Customer: Hi, I have a 2009 cadillac srx. ) If you can't find a tester locally, look in Amazon, automotive, Lisle exhaust gas test kit 75500. 6l V8 overheating need advice. com - it's the online GM/Cadillac service manuals plus a lot more. alldatadiy. Possibly as Geno said, the water pump drive system could do that as well After three trips to the dealer during the last four months for overheating in my 1999 Cadillac Deville with 55,000 miles on it, they now tell me I have a blown head gasket and are recommending I buy a new engine. I am replacing the thermostat today. Failing head gasket(s) cause system overpressure which blows off coolant, causing overheating. Replace the overflow cap. The general L47 produced 320 horsepower and 290 pound-feet Cadillac service bulletin 01-06-01-011 deals with oil burning on 1996-'99 Northstar V8s. It has been overheating. Just hoping that this isn't a common problem I have a 94 Eldorado and praying that i don't run into the same problem. The Northstar V8 I have a 2005 STS 4. Outside air temp has been below 40F. The purge line attaches to #1 and runs to a nipple on the side of the surge tank. Google "cadillac forums northstar engine heater outlet quick connect". Talk to Norm or Jake and find out who they recommend to do the work in your area. The Northstar has a very aggressive cylinder hatch pattern, to promote sufficient oiling at high engine speeds (6000 rpm). All the above companies are referred to and discussed in great detail in several CF forums over the past 6 years. Changed the temperature Sensor, Changed thermostat, Put in Your 2001 Deville Northstar engine has several areas that cause overheating. I recently had the water in this thread in this sub-forum in the entire site. one day I drove about 5 miles and warning lights said "Shut down A/C, IDLE car" I pulled over shut it off, let it cool down. The car remains cool when it idles. The car overheats because the head gasket allows coolant into the combustion chamber (white smoke ) and gasses into the cooling system which causes the engine to overheat. Tags Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX, Escalade, LYRIQ, Vistiq, concept and future Cadillac models. rockauto. Lots of cooling system info there. 2-coolant gets into the cylinders and you leave a trail of white 2004 Cadillac Deville DHS 238k miles Bought at 100k miles, owned for seven years. 6L Northstar. Problem with overheating on 1996 Cadillac Deville with Northstar engine. com - engine out of car, advanced rocket science. Anyone trying to get your money should be checked out BEFORE you send anything anywhere. Please go to the Engines; Northstar forum and study the several sticky threads concerning cooling systems, fan operation, gauges, and the general thread on the cause(s) of head gasket failures. A cornerstone of older Cadillac models, the Northstar engine was hailed for its cutting-edge technology, becoming synonymous with the Cadillac brand. Ranger's advice X 2 - the fuel pump or level sensor has NOTHING to do with overheating or excess tailpipe vapor - perform a cylinder block exhaust gas test after an overheat event. 6 Northstar overheating problem in my 06 Lucerne. while you may have a leak, the leak shouldn't be the cause of an overheat at idle, but NOT while driving. Unfortunately, the Cadillac Northstar is prone to overheating, and this overheating process can cause the valve covers to crack and leak oil. My deville ran at between 190 & 201 degrees this morning. Other causes of the morning shakes could be fouled spark plugs, dirty injectors Re: 02 Deville dts overheating-----check the PURGE LINE - the PURGE LINE is the only way of expelling air from the Northstar cooling system - it is a 3/8 diameter hose that goes from a hollow bolt in the thermostat/waterpump housing area of the engine - and plugs onto a nipple on the side of the SERGE TANK - You also need to read the sticky on Northstar engine gasket failures and testing down in Engines, Northstar Performance. Premium Member If it won't run, tint the windows Maryland Eastern Shore 2002 STS F55 [/I] 2005 Deville Northstar engine overheating - not head gasket related 2005 Cadillac Deville Northstar engine Started overheating while driving about a month ago, 135000 miles on engine. Valve Cover Oil Leaks. Downshifting to run the engine (and water pump) faster will cool it down temporarily. We have debated the reasons why the bolts pull out, but the Im havin a problem too, overheating, runs fine, no smoke, fans coming on, just put a thermostat in and flushed the radiatior, still overheating. northstarperformance. Even my own local Cadillac Service Manager was in denial about this engine's Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX, Escalade, LYRIQ, Vistiq, concept and future Cadillac models. vehicle and no-one is able to pinpoint a cause of the temp rise. My 99 Deville was overheating turns out it was Catalytic Converter. Does anyone have the answer to the northstar overheating issue? There has been many post about the issue, but no answer. 0 % 2004 Deville Northstar. The car had never overheated, nor any loss of coolant before that. 2005 and newer NorthStar engines don't have the same head gasket problems that the earlier ones had The engine could care less about its running temperatures between about 180 to 250 1998 Cadillac deville (Northstar front wheel drive 4. Posted July 2, 2005. Cadillac Northstar engine problems. The cure, says Cadillac, is to do a ring cleaning procedure (seems those long oil change intervals weren't such a good idea after all). rvaddict. They leak when they go bad (probably likewise on the radiator) and cracked heads are all but unheard of. Early Basically, the purge line is a slow constant bleed that runs from the water pump housing metal bolt/nipple to the top side of the coolant reservoir. Either buy your own test kit or rent it and buy the fluid at any parts store. 6 Northstar engines, what is the number of overheating situations can it with stand within the 96-99 northstars. Flushed the whole system out, and I did a block test which came back negative. Based on previous posts this has been going on for over 2 years. it basically states that the tablets are not to be used for routine cooling system maintenance but will only be used after specific Crest Cadillac has one of the best Northstar engine men in the country. By rvaddict July 2, 2005 in General Cadillac Forums. There are a couple of metal heater pipes that cause leak trouble from corrosion. I can't seem to figure this car out. 6 v-8, is overheating rather constantly now. If you see bubbles in the surge tank when you start the engine (cold), no Remember the Northstar overheating sequence due to failed head gaskets: The Check your coolant level. Low Coolant. also before i forget again, today, after leaving a gm garage, the car overheated well past 250, pulled off and There IS a GM/Cadillac TSB (Technical Service Bulletin) on the discontinuance of the tablets. The purge line is a high point constant bleed, used to keep air and gases out of the coolant in order to prevent water pump cavitation and the resulting overheating. THAT overpressurizes the cooling system, blowing off coolant, causing overheating due to loss of What should you do if the engine of your Cadillac overheats? If the warning light of your Cadillac comes on, or you see that there is steam coming out of the car’s hood There are some overheating causes that you can easily prevent yourself: - Always use high-quality coolants: change the coolant every 30,000 miles (50,000 kilometers) P1258 like you said is a overheat protection code. There are three ways the head gaskets can fail on a Northstar. Without the AC engaged, the car always runs a tick higher than the middle, which I consider normal. There are NO visible coolant leaks and NO coolant on the floor. You i live in arizona 110 degreez my car overheating when i was driving at wot so i change my themalstat sry for the spelling lol and drove it fine 3 weeks later my raidator leakin change that week later weather went up to 112 degrees and my car overheated it when up to 249 degrees but the first time The correct thermostat is not a cause of "overheating" and it must be installed for proper cooling system function - note that it is in the "lower hose" - the radiator to water pump[ return line. ) The Northstar system thermostat is absolutely required for proper cooling system The pressure was getting released from the coolant crossover. also have hissing coming from right side of engine and steam . However there is a problem. I can't really tell if the smoke has any particular smell. Cadillac recommends using GM cleaning kit (P/N 12378545) and Kent-Moore J-45076 induction/evacuation tool to do the job. Do a search on the forum for "purge line" as it could be clogged. Quick question on Northstar "overheating" I know about the possible causes, just unsure if bad head gaskets will cause overheat with no loss of coolant. It runs at 195F. Blown head gasket. I’ve gotten ahold of a beautiful black 98 DeVille Elegance with only 69,000 miles on it. cause i can buy a new 1999 for 5900 i found at dealership with a waranty from them, OK - I see that you cleaned the purge line - a common source of Northstar "overheating". You might want to read through the several stickies on these problems/advice in the Engines/Northstar main forum page. It then sat in the garage for a day, and it happened again when I start the car the next day. At the dealership I work at a number or Northstar Caddy's fail emission tests due to high HC's due to burning oil(you can fix this BTW buy switching to synthetic oil wink wink). That would be a very easy repair. Only 70,000 on a 97 Northstar. Show Less . This problem is worse in town than on the highway. It doesn't have any signs of it have blown head-gaskets but when we pour fluids into the over-flow bottle especially with thw engine warm it bubbles up then goes down after a little bit. com Northstar Engines and System Technical Discussion. (Northstar engine) The car is pretty much flawless. Open the two albums there - pictures and diagrams of the temperature gauge and water pump drive assemblies. overheating; cadillac; northstar; engine; By CaddyDaddy1999 July 28, 2017 in Cadillac Deville, Eldorado, Seville There is too many variables as to what can cause the failure. Explore the legacy of the Cadillac DTS and its iconic Northstar engine. A CF Vendor, Northstar Performance, makes a stud kit. Let me start by saying I first bought car with 89,xxx miles on it. A clogged purge line allows air bubbles to reach the water pump, causing loss of pumping action which leads to slow overheating. com for parts or call Luke in Parts at Lindsay Cadillac -----> over there. I was told that it might be a blown head gasket but the more I check and test, the more I am thinking this is not the cause. Informal Lounge, Introductions, General Discussion Seville and Eldorado Forum CTS First Generation Forum - 2003-2007 FWD DeVille 1985-2005, Fleetwood, and 60 Special 2004-2007 CTS-V General Discussion The Time Fastener Company inserts currently used are the "Big Sert". Cadillac Forums is the perfect place to go Hello everyone, I’m back again with another 4. The only "problem" you'll cause by filling it to the top is that you may have some coolant to clean up once it pukes out the excess, and it will. Your overheating will not cause this, the bolts pulling will cause a breached head gasket resulting in overheating and high pressure in the cooling system. Northstar Engines and System Technical Discussion. This video will show you the cause of head gasket failure as well as the best fix available for your Cadilla That pretty much shows that your Cadillac/Northstar opinions are in the gutter. i guess luxury and quality really does have a price and it's an expensive one. Its no secret that there are all too many luxary Cadillacs on the highway full of stop leak, overheating, and leaking oil. Save Share Seville, and Deville. gtoman 1970, You are misinformed on the Northstar - You NEED to do some homework: Go up to the black bar ^^^ and study the entire Cadillac Technical Archive. Crankcase seals; Crankshaft seals; Drain plugs; Oil filter adapters Aside from oil burning on the engine and the odor and blue smoke I have a 2000 Eldorado ETC with 110K miles. I think some antifreeze comes out the overflow tube Remember the Northstar overheating sequence due to failed head gaskets: The intruding exhaust gas overpressurizes the cooling system, which then dutifully vents off gas and coolant through the pressure cap relief. At your high mileage, change the water A breached head gasket on a Northstar is usually because the head bolts are pulling out of the block. That lasted a short while and it was overheating replaced radiator, thermastat, overflow tank, waterpump, still overheating, someone suggested the coolant temp switch or the sensor. These cracks are typically no bigger than a hairline, but they can cause the pressure This thread is a duplicate of one I have seen somewhere else in CF. This is my 3rd Cadillac, and my second blew the head gaskets, i hate to say it but it shared the same temp reading prior to completely disabling itself. My advice? First, try to get a 2005-2011 Northstar if you must have one; I admit, they are fantastic engines to drive, There is hope for your NORTHSTAR ENGINE if it overheats and has blown head gaskets. Could this or the fans be the cause of my overheating? Save Share Study all the cooling system stickys in the Engines; Northstar forum - lots of info there. What year models have the revised Northstar engine where overheating and blown head gaskets won't be a problem. There's vital info in every one of these. 8 Northstar overheating; it runs hotter the faster the speed (about 230-244 at 55mph); at slower speeds, runs 196-208. 9. You may notice warning signs like steam from the engine or the temperature gauge reading high. I spent 5 months researching the problem and finally found Norm Huhn who manufactures the inserts needed to fix the aluminum heads and keep them attached to the steel engine block. The car still overheats with normal driving and requires a top off of the coolant. I get codes p0455 and p01258. I wish you the best of luck whatever way you decide to go GM FAN FOREVER. northstarperformance. If the Cat converter gets plugged up the heat will not get past converter it will back up into engine block causing overheating. At other times have had it run hot/not hot regardless of speed. com) or the studs by Carroll Custom Cadillac. For starters, Google "cadillac forums 2000 deville northstar overheating" or something close. I have a Cadillac DTS 2008 and it is overheating, I can drive for about 40 minutes then when I stop at a red light the temperature gauge goes up, if I remain idle in traffic for a long period of time, the car will overheat and show a display of A/C overheating engine shutting off it does not say anything about coolant, the thermostat was changed Possible overheating - have you checked the purge line and both fittings - water crossover and surge tank - for proper flow or clogging ? A common cause of false overheat problems. Check the purge line, belt tensioner & surge tank cap, any of which could cause an overheat situation. I have just purchased a 2000 Eldorado ETC. 1999 Cadillac DeVille - overheating Close Engine overheating in Northstar engines is often a result of the aforementioned issues. 2-coolant gets into the cylinders and you leave a trail of white The head gasket(s) do not fail due to overheating. so here's my question in a new thread on an old subject for the techs Northstar 4. I think its time for a recall. It has a history of overheating if the outside temperature is 90+ degrees fahrenheit. recovery tank cap; fresh 50/50 mix of DexCool; checking electric fan operation and a new 190 degree thermostat (which I boil tested on the stovetop with a thermometer for What causes overheating problem in Cadillac Deville with an overheating? - Answered by a verified Cadillac Mechanic. By 2004 Cadillac DTS Black/Black & Sunroof (current) 1993 Cadillac STS, 4. Northstars are good engines - properly maintained. Car overheats. So your Northstar powered car overheated, or it's blowing white smoke. If all that checks out, have a cylinder pressure test done or the coolant tested for exhaust gases. Blew out the radiator right beside the top radiator hose, passengers side of the car. One of the most common causes of an overheating engine is a Overheating: Overheating is both a cause and a symptom of head gasket What causes a northstar engine to overheat? Gaskets on water pump were Northstar engines have always had oil consumption issues from the get go. Whether it’s a failed head gasket or coolant system defect, overheating can cause significant damage. i have replaced the temperature sensor and thermostat a few months ago ran great but started out with temp gauge fluctuating and has now got overheating . I The most common places where oil leaks from a Cadillac Northstar 4. BUT NOW cylinder 7 misfire !! as you can see its been frustrating trying to pinpoint the actually cause for the misfire code cause now it has changed cylinders. Changed the water pump and thermostat just drove 20 miles no problems. what year did the northstars finally stop having problems. The Northstar V8’s life expectancy is around 200,000 miles or a bit more, but you will have to replace the head gasket at least once before that as it fails soon after 120,000 miles. General Cadillac Forums ; Northstar overheating. The first of a series of videos we're releasing. Cadillac Forums is the perfect place to go to talk about your favorite Caddys including the ATS, CTS, SRX, Escalade, LYRIQ, Vistiq, concept and future Just wanted to know if any one out there as any documentation as to when the head gasket issue on the northstar was corrected by Cadillac. A blown head gasket is a severe and common cause of engine overheating in DeVille. Cadillac Forums is the perfect place to go to talk about Re: overheating problem with 2000 deville with 4. Search www. When I repaired the crossover, my overheating problem got worse and then required me to release pressure through the tank. Another sore spot is the metal Imagine that, a Cadillac "tech" not knowing to check for a clogged purge line first, when diagnosing an overheat problem on a Northstar. Low coolant is the most common reason that your DTS will overheat. BEWARE OF SCAMMERS. They blame one simple thing- headgaskets. The car has only 74,000 miles. 6 L, Northstar (current) 1968 Dodge Charger, 383 Magnum, automatic 1967 Plymouth GTX, custom 392 Hemi, 4 speed, positraction 1965 Pontiac 2+2, 421, 4 speed, positraction 1964 Plymouth Overheating Causes: Cadillac DTS. when it redlines we pull over immediately and when i The Cadillac Northstar engine was a revolutionary V8 engine for 1993. Water is coming out of the overflow tube. com - engine in car, rocket science. FWD DeVille 1985-2005, Fleetwood, and 60 Special. Discount the most common causes of Northstar overheating before condemning the head gasket bolt threads. If the power control module on a Northstar equipped car detected an overheating condition which could be caused by a number of issues, most notably low or no coolant, fuel, and spark is shut its just really random, sometimes 230, sometimes till the red mark and the car shuts down, it randomly fluctuates, coolant loss is also at random times, and the car has no smoke/steam when over heated. We have change the radiator, hoses, water pump, thermostat, and cross-over gaskets and our 98 eldorado is still over-heating. . You need to understand the cooling system and how/why it works. And with the ‘Northstar Condition’ affecting 2002 Northstar overheating. Low coolant is a symptom of a cooling system leak of some kind. 6 Y engine overheats on the highway or when I turn the air conditioner on. That's just about the only thing that would cause it to overheat, and be "normal" 5 minutes later. Look through my albums for pictures and diagrams of the water pump drive system and thermostat for more insight. for the price that was estimated here i could just go out and buy another car which is sad but must i am starting to think that this is a common thing with owning a cadillac. and the cap does sometimes build up pressure. 1- exhaust gases blow into the cooling system under load, such as when you climb a hill or pass someone. what we should start is a cadillac Ls4 retrofit project, the northstar is a great motor but LS4's would be a great retrofit for durability and performance wise . The thermostat, water pump, and water pump drive system are usually NOT the cause of random overheating. There are also many threads on Yeah, that ^^^ Most Northstar head gasket paranoia says "The head gasket is no good and they're gonna blow!!!" - which is not quite correct. The information screen read "engine - Cadillac 1996 DeVille question idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating. 2193 Views 6 Replies 4 The head gasket failure on a Northstar engine is really a failure of the head bolts ability to hold the clamping load of the head. If not addressed, a faulty water pump can cause significant engine overheating, potentially leading to more severe damage. I was told at the cadillac dealership that the headgaskets were LEAKING and I 1999 Northstar - please read the head gasket (bolt hole thread failure) sticky poll in Engines; Northstar. Is that normal or could something be wrong? Ive got a 2002 cadillac deville base im gonna try to give as much detail as possible here. You need to go to the forums for Engines; Northstar, Deville, and Seville and look for threads - and stickies - on fans, cooling systems, head gaskets and purge lines. One interesting feature was this engine's ability to run even without coolant. got an 05 cadillac for my mom. at 265 degrees are patently false (NO, rubber hose and plastic cooling system parts 2000 – 2005 Northstar L47; 1999 – 2002 Northstar LX5; On the racecourse, the Northstar L47 engine was famous. There is no loss of performance (that I can tell) and no overheating. If you have a misfire the unburnt fuel A couple of days ago my cadillac overheated to 260*. Northstar overheating. I already replaced the evap replaced gas cap, radiator seems to be in order. For about a year, it was overheating when the A/C was running and the car was stopped for extended per read more I have a '97 Concours with 88K that has overheating problems, I was hoping to get some insight from the loyal Cadillac bretheran. 97roragirl Discussion Starter · Jun 28, 2005. Usually, the Northstar is just using oil, rather than leaking it out. More Northstar cooling and oil system info. Click on my username, get to my profile. to/3z1PdxaFlexible Backprobe Here are the most common signs of head gasket failure on a Northstar: - Overheating - High pressure build-up in the coolant surge (fill) tank, that remains when the engine cools off You say that the car got hot the second time but the resevior was about an inch low a inch shouldn't cause the engine to get very hot. The gasket may not leak at all until you put the engine under a load. Start by reading the 'sticky' posts at the top of these threads lists. His name is Guss; I cannot spell his last name! The service advisor that was handpicked for me to work with, to be the first to use the SureGrip Head 2003 cadillac deville overheating I have a cadillac deville 2003. At 205* (idle) the coolant begins to rise in the res. The most common reasons a Cadillac DeVille is overheating are a coolant leak (water pump, radiator, hose etc. The Cadillac Northstar LMP program utilized a twin-turbo version of the L47. Too much flow is not efficient. It sounds like you might have caught it early before coolant can cause the threads to crumble in the block if it gets into the bolt holes. If the hose is clear, check for blockage at the nipple on the General Discussion. 6 northstar The cooling system in your car is discussed endlessly in these threads, Cadillac Tech Tips, Northstar Performance sticky posts and main forum as well as up ^^^ in the Cadillac Technical Archive. 6l V8 Northstar overheating with new radiator. If the gasket is bad, the 626 can easily overheat. The head gasket then looses its ability to seal the head. In a way, the Northstar does shut down cylinders, but not like the 8-6-4. Conversely, an overheating engine can Interests: Northstar, Cadillac, Computers, Electronics, Tools, Pools, Car Model/Year: 91 Seville & 96 Deville; Engine: Northstar 4. Tags 1953 Cadillac Eldorado Convertible 1954 Cadillac Coupe de Ville 1993 Cadillac Fleetwood Brougham (Sold) 1996 Cadillac Fleetwood Brougham 1998 Cadillac STS 2003 Cadillac Escalade ESV 1988 I just bought this gorgeous White one owner 70,000 mile 1999 Cadillac Deville. The L47 Northstar has competed in the 1995 sports car competition with a 650 horsepower variant. and ultimately out the overflow. Check your coolant level regularly and inspect your radiator for blockages or cool spots. It started overheating over a year ago and we replaced the radiator because it was leaking. Leaking coolant=low coolant=toasty engine. uddvumemqmzqgvkiyzrtlhvblfqkwvxcsihgozdpulehhewzsjwgq