I have a 1995 pontiac grand prix se 3.1 and my cars tempreature gets to hot every time I drive it and on the tempreature gage in the car it showes it on the max hottest.
have the same problem?
Tuesday, August 15th, 2006 AT 11:14 AM
A few questions.
Does it overheat really fast, or can you drive it for a while before it overheats?
Do you ever have to add fluid?
Do you smell radiator fluid when it gets hot?
Do the fans in front of the radiator run when it is hot?
First off, I would change the thermostat and see if that corrects the problem.
Tuesday, August 15th, 2006 AT 8:48 PM
The car can be driven for about 20-30min before it reaches maximum tempreature, no collent is smelled but it is black.I did add alot of coolent before because it was needed and I have never seen the fans work infront of the radiator.
Tuesday, August 15th, 2006 AT 11:31 PM
Ok, black fluid is not good. This could be a sign that oil may be getting into your coolant which would indicate a leaking head gasket. However, if the fluid has never been changed, and or green coolant added to the orange fluid, that can make the fluid look black also.
Having to add coolant means you have a leak. You will need to find the leak. If it is not leaking to the outside, it most likely is leaking at the intake manifold gasket. The fluid would be burned thru the engine, and that is why you cant see the leak.
Ok, why it over heats. Well, its not the thermostat if it takes that long to overheat. If the fans are not running, that is probably the reason for the overheating. If I remember correctly, you should have two fans that sit behind your radiator. One is the condensor fan, and the other is the coolant fan. The condensor fan should run whenever you select your air conditioning on and the compressor clutch is engaged. The second fan is commanded on by the PCM as needed for cooling. I belive the PCM gets its information from the ECT (Engine Coolant Temperature) sensor. It might not be a bad idea to replace that sensor.
These fans have their on relay to control them, and maxi-fuse #1 and #3 60amp for power. All of this should be checked to determine why the fans are not running.
On a side note, I would have the fluid drained, flushed and replaced. And manitor the fluid consumption and find out where it is going.