Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Log In

A valid email is required.
Password is required.
Site Notices
3/20/2017 5:03:23 PM
Posted: 5/18/2001 5:59:02 AM EDT
My girlfriend has a 94 Grand Prix with a 4 cylinder. How easy is it to change the thermostat in the thing? It's runs hot if she is stuck in traffic.
Link Posted: 5/18/2001 6:21:21 AM EDT
It may not be the thermostat. The radiator may be all plugged up.
Link Posted: 5/18/2001 6:26:04 AM EDT
......and hows that fan working? just a thought Nuckles.
Link Posted: 5/18/2001 6:30:28 AM EDT
check blinker fluid
Link Posted: 5/18/2001 6:35:29 AM EDT
oh yeah, while you have it apart check for reverse alternating compression gauge miscomputation and the advaced stoichiometric zenor diode fluctuation. [:)] Nuckles.
Link Posted: 5/18/2001 6:39:07 AM EDT
The radiator being plugged is certainly a possibliity, but my motto is to check/replace the cheapest items first. If a part has been installed, and it is not the problem, you probably can't take it back. Not good considering the cost of some replacement radiators. If I remember right, it is the same motor as the Cavaliers. I have worked on those. Shouldn't be too tough.
Link Posted: 5/18/2001 6:48:07 AM EDT
The thermostat shouldn't be too bad to replace as the housing is usually right on the top of the motor. However, I am not aware of any Grand Prix they made with a 4 cyl. Are you sure it isn't a Grand Am? If it only happens when sitting in traffic, I would check the fan and the temp. sending unit. The GM 4 cyl is also notorious for head gasket problems due to heating issues. Cooling problems can be numerous different things. A radiator cap that doesn't hold the correct pressure can cause unusual overheating to occur. The cap has to be able to hold 16psi on the cooling system or that can cause the car to overheat. Good Luck.
Link Posted: 5/18/2001 6:48:52 AM EDT
I would do a cooling system flush before anything else. Make sure you get the 50/50 mix of water/coolant when you fill it back up. Buy the flush kit and the flush additive. I don't like to use all the flush additive as it is a fairly harsh chemical. I normally add about half and run the flush procedure. Good luck.
Link Posted: 5/18/2001 7:05:23 AM EDT
sounds like a possible fan issue. second doing a flush and fill, after changing the thermostat. also something that gets overlooked lot's is the front spoiler. believe it or not that is there for more than looks. the lower spoiler/air dam, directs air for more cooloing. had a few wrecked corsicas that we were not able to get this part for when the front ends were fixed. sent them out so they would be useable, turns out that without this part they all over heated.
Link Posted: 5/18/2001 7:17:53 AM EDT
the relay for the fan is more than likley the problem.
Link Posted: 5/18/2001 7:45:10 AM EDT
"HMMmmm...This won't be cheap.."
Link Posted: 5/18/2001 7:46:59 AM EDT
[Last Edit: 5/18/2001 7:47:22 AM EDT by oneshot1kill]
Link Posted: 5/18/2001 7:58:21 AM EDT
Top Top