Question about 1988 Cadillac Sedan DeVille

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Overheating and wont keep running after key is released

My car overheated,pulled over,added water to boiling radiator,water flowing into reservoir,cooled a little, drove it then it overheated again,was trying to pull over into store-car died-service engine soon . left it AAA towed it back to apt. tried to start after adding water. car died,. replaced thermostat,old one was rusted,trash it was .water flowed through the radiator hose -so water pump is good no sounds. o there are no leaks at all!! on the entire car fired it up it ran then died. service engine soon light came on diagnostic code E-30 showed,which is the idle speed control,too it out ran test on it ,it works fine. erased the code .had a guy look at it he stuck a screwdriver in a wire and had me start it it seemed to run fine(r).theres no water in oil or vice versa,nor is there any smoke out the exhaust. question is ? can ur car get so hot it fries the wires?,will this solve the problem?has this ever happened to anyone? i dont want to buy piece after piece until i spend crazy tons of $$$$

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Sounds like you have a blown head gasket. In this case though, I feel that you are blowing hot exhast gases from the combustion chamber into the water jacket causeing it to heat up. In these cases, the engine will generaly get hot in shorter time than what one would normally suspect. Typically just a head gasket is needed. Have your mechanic check the radiator for combustion gases. This is checked with a fluid in a bolltle that will change colors if found. GL

Posted on Sep 04, 2009


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My car keeps overheating and leaks water after a few miles. I have put steel seal in but this has not worked. Can you suggest any remedies or what to try next please . It is a Suzuki swift2005 thanks

swift normally comes with coolant system. coolant gets cooled by the radiator and a fan is there for overheating of coolant. check the coolant system and fan. water is never added to a coolant system.

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2003 dodge Durango is over heating every hour radiator looks bad but need more advice and is spraying antifreeze on the 1st hour of running

If the radiator is spraying coolant from the fin area, you should either have it recored, or replace it. Generally, it is not practical to repair a radiator core that is leaking due to corrosion - it will soon spring a leak from some other spot. (recoring: remove the pans and put them on a new core). Rock Auto sells new radiators ranging in price from $95.79 to $250.89. The same radiator is used for both engine models, and also in the Dodge Dakota from the same year.

Cooling system corrosion is the result of failing to change the coolant when specified, or of using tap water with a high ionic content (this is especially a problem in the Southwest US). Skimping on the anti-freeze also leads to corrosion; anti-freeze contains corrosion inhibiting compounds, and it raises the boiling temperature of the coolant so it can perform its function over a wider range of conditions (liquid can remove more heat per volume unit than steam). Keeping the system properly pressurized (leak-free) also raises the boiling point. If your tap water is problematic, use deionized water (the water from a household dehumidifier is excellent if the dehumidifier is reasonably clean).

If you must add coolant to an overheated engine, do so slowly, while the engine is running to minimize thermal shock to the system. You want to cool the engine down evenly to avoid cracking anything. Keeping the engine running circulates the coolant to prevent sudden cold spots. It also helps to prevent bearing seizure - see the next paragraph. Add your coolant to the overflow tank first - it is dangerous to remove the radiator cap on an overheated engine.

Continually overheating the engine will damage it - the oil breaks down and turns to varnish in the bearings, and there is a possibility of cracking the block or a head from thermal stresses beyond design limits. Check the quality of your engine oil right away to see if it is breaking down; if so, change it.
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Jun 14, 2015 | 2003 Dodge Durango

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What causes ny 2005 sangyong musso suv overheating engine problem

Maybe rust blocking radiator. Pull the radiator pipe off the bottom and flush it. Otherwise might have minor gasket blown. Hot gasses heats the water up. Use antifreeze (gives water a higher boiling point so makes driving a bit safer on the engine (wont seize if water is not boiling))

Jun 02, 2014 | 2005 SsangYong Musso Sports

1 Answer


Overheating can be "boiled" down to a few issues:
*blockage: Something is stopping or slowing the flow. Main suspect is the thermostat. It is designed to open and close at the proper temperature so as to keep the engine at the optimum temperature range. They have a tendency to lock closed and cause overheating. Sometimes it's random. The blockage may be something like sludge or rust in the radiator or gunk that someone put in that does not agree with it.

*coolant/water loss. A leak somewhere. Blown head gasket, cracked head/block, hose, etc.
*pressure loss. This happens when the water gets to boiling temperature but is kept under control by pressure (pressure resists heat) and then something such as the radiator cap releases the pressure and the temperature rises. The coolant will also leak out and then the overheating will be due coolant loss as well. This is especially true with the Cadillac Northstar. The head bolts allow the head to lift off the block, ever so slightly, and pressurize the coolant system with exhaust gases beyond radiator cap pressure limits. It's usually when you accelerate or put the engine under load such as going up hill.

^check for exhaust gases in the coolant. smell it or buy a kit to test.
^get a new thermostat, or, test the old one by boiling it in water on the stove; see if it opens. I always get the "failsafe" kind: fails in the open position.
^check for oil in the coolant or coolant in the oil: grey sludge.
^check for leaks on the ground.
^test the radiator cap. some part stores have a way to test them.
^check to see if it's made by Cadillac. look for the word Northstar. If so, hold on to your wallet. There's a whole new world of overheating adventures.

Oct 27, 2013 | 2001 Oldsmobile Alero

3 Answers

What are all the possible thing that could cause overheating in a Car to the extent of water boiling and as a result ogt the radiator bursted?

1.If your radiator burst replace. 2.With the car COOL, open the radiator cap or overflow and fill it.3.Leaving the cap off, start the car and let it warm up as you keep the radiator topped off. 4.Once it wont take anymore and your sure the car is completely warmed up, reinstall the cap.5.Everything else your gonna have to hurry on or your car may start overheating. Grab the top hose and squeeze it. If you can't almost grab it till it closes then you have a bad thermostat. Replace it, if you have any doubts, pull it off the car and boil it inside in a pan of water, you should see the spring move and open the plate.6.If thats not it check your water pump for flow,bearings, and belt condition.7.Also check all your fluids for antifreeze contamination, mainly the oil, as this can be a sign of a blown head gasket which is very common on these years of Gallants. REMEMBER your cooling system cools by building pressures of over 300 psi, and any flaws in your radiator during a overheat will blow! Hope this helps ya buddy! Shannon(Shizzo)

Jan 14, 2011 | 1995 Mitsubishi Galant

2 Answers

Over heating i have water in the radiator do i have to put some radiator fluid in so it wont over heat?

You need to check that the water is flowing first, with the engine cold remove the radiator cap and start the engine let it run until it gets warm, once it is warm leave it going until you can see the water flowing. If you can't see it flowing after 10-15 mins of the engine running then you will need to replace the thermostat.
If the water isn't flowing then you have a problem with the water pump and you will need to replace this.
Hope this has helped

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1 Answer

Nissan serena 1.6 16v 1995 petrol. Just fitted new radiator and when i filled with water it overheats and boils up! is there a special way of doing this because it keeps overheating! seems to be a lot of...

Your thermostat could be stuck. With it boiling over and and overheating it sounds like the thermostat isn't opening up to let the water flow to cool the engine and causing the engine to overheat.

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1 Answer

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