I would suggest doing a block test to ensure no head gasket or cracked block issue. You can rent a tester from Autozone or Orielly's. Make sure you buy the fluid to use in the tester. Follow the instructions that come with the tester.
SOURCE: my cigarrette ligher does'nt work
i`m only guessing but it should be on the side of the floor well beside your ankle it a grey box about 4 inches off the floor drivers side. hope this helps joe
SOURCE: running hot
with engine off feel tge radiator and make sur it is uniform as far as how hot it is feel for cold spotor area thisindicates clogged radiator, if you can get an infa red temp gun even better
SOURCE: 96 cadillac deville overheating
Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With
the engine 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.If the hose is clear, check for blockage at the nipple on the tank.
SOURCE: 1997 Cadillac Deville Overheating
Yes it can be the head gasket,one way to tell,is make sure the engine is cold,like in the morning.Take the rad.cap off,add water until full.Turn over the engine and let run,while looking at the opening(where the cap goes).Is the water coming out like really fast,maybe as much as a fountain?If so,then it is a head,or head gasket.If you would like to bleed system of air I can tell you how.If there is air in the cooling system,it will run hot.With it cold,or cool,not hot or real warm,fill the reservoir with water up to 3/4 full,over the fill mark.Fill the radiator full,and replace radiator cap,and reservoir cap.Make sure the hose from the reservoir to the radiator is in good shape,no holes or crimped anywhere.start the engine with the ac off.At this point the cooling fans should not be on.There not supposed to be on unless you straight wired them.Before the fans come on by themselves,or the vehicle runs hot,and right before not to soon,cut the car off.Go in the house and get on computer for about 30 to 40 minutes,and go back out side and check the water level in the reservoir.Is it down?if so add more water and repeat process until engine runs at normal temp.The fans should come on,and go off on there own,with the ac off.Let me know the out come.
SOURCE: 2003 galant 4cyclinder running hot,
Make sure your radiator is working and you have proper coolant and no leaks. Make sure your fans are kicking on. You might have a bad coolant temperature sensor.
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