Mechanics

OVERHEATING/NO WARM AIR

2001 Pontiac Montana

Engine problem
2001 Pontiac Montana Engine Size unknown Front Wheel Drive Automatic 109000 miles

I just had the intake gasket replaced on my 2001 Pontiac Montana. The engine temp is still getting too high, and we rarely get warm air from the heater. Could this be the water pump? Thanks.
AD
Avatar
Kwerner
January 21, 2008.




Make sure the radiator is filled with the correct type antifreeze. Find the thermostat and replace it-if it continues come on back. Check the heater core if its clogged up.

Rasmataz
Jan 21, 2008.
The temp goes up when we stop or are going really slow. Almost as soon as we take off again, it goes back down. The heat works only when we're going at a good, constant speed for a while. When you stop/slow down, the air is cool again. Didn't know if any of this makes a difference, just wanted to add a little more detail. Thanks

Tiny
Kwerner
Jan 22, 2008.
Have you replaced the thermostat? If so does it have an automatic temperature control system.
AD

Rasmataz
Jan 22, 2008.
We checked the water pump, it is good. We changed the thermostat. Now it gets hot while driving, instead of while idle. If you turn the car off and open the bleeder valves on the coolant system and let air out, the temp goes down. I don't see how air keeps getting in though. The radiator cap doesn't really look so great, so we are thinking of changing that. I have no idea!

Tiny
Kwerner
Feb 14, 2008.
I have 2002 Montana and am having same problem. Temp gauge fluctuates up to very hot when stopped and then goes down normal after driving. And just in the last couple days, noticed no warm air when heater is turned on. Can anyone give me direction what to do to fix? Thanks.

Tiny
Sk33zur
Oct 18, 2008.

AD