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Car Forum / Pontiac / Pontiac Cars / October 200696 Grand Am V-6 3.1 Overheating
I am having a problem with my car overheating. I just drove from Philadelphia to evansville,in and my car when almost back started to overheat. It was boiling water and coolant out of the overflow tank. I have just gotten back from the mechanic where they did a pressure test and said there is a small intake leak but dont think that is the problem. He thinks its a clogged heater core. A couple of people who i have talked to thinks its a thermostadt. Would a clogged heater core cause a car to overheat. I just drove the car yesterday and about 30 min into my drive the car overheated. There was alot of pressure built up on the tank when i pulled it over. When going home we kept the cap on but left it a little loose and see if that helped in which it did. Does anyone have a clue? > I am having a problem with my car overheating. I just drove from > Philadelphia to evansville,in and my car when almost back started to [quoted text clipped - 8 lines] > on but left it a little loose and see if that helped in which it did. > Does anyone have a clue? You did not give us much to go by. Overheating can be caused by many things. You or someone you hire will have to determine which thing: radiator, thermostat, fan, engine, belt, pump, airflow, coolant mix, cap, hoses, etc., etc. >I am having a problem with my car overheating. I just drove from > Philadelphia to evansville,in and my car when almost back started to [quoted text clipped - 8 lines] > on but left it a little loose and see if that helped in which it did. > Does anyone have a clue? Be ready to dish out some cash. You said he said you had a leaky intake, I have never heard of one that didnt have a leaky intake eventually, you are looking at $800-1000k on average to fix that alone, may as well get a new heater core and make sure your radiator is not clogged also all at the same time. Its a damn shame GM has this self inflicted stinch surrounding them regards to the flagrant intake failures. I have had the thermostat replaced now and the coolant flushed and it didnt help it. One person told me to have the overflow cap untighted about a half a turn to take some of the pressure. I think it might be the intake gasket but who knows. > >I am having a problem with my car overheating. I just drove from > > Philadelphia to evansville,in and my car when almost back started to [quoted text clipped - 15 lines] > time. Its a damn shame GM has this self inflicted stinch surrounding them > regards to the flagrant intake failures. > I have had the thermostat replaced now and the coolant flushed and it > didnt help it. One person told me to have the overflow cap untighted > about a half a turn to take some of the pressure. I think it might be > the intake gasket but who knows. You never said if you checked the fan -- is it running? Also, are you losing coolant? >>>I am having a problem with my car overheating. I just drove from >>>Philadelphia to evansville,in and my car when almost back started to [quoted text clipped - 15 lines] >>time. Its a damn shame GM has this self inflicted stinch surrounding them >>regards to the flagrant intake failures. The fan seems to be running and yes i lose coolant when it boils out of the tank but other than that no i do not. One of the problems i have is that it i lose throttle response when it starts to heat up. It really struggles when going up big hills. I can tell when its starting to boil over because it will take more throttle to go and it will start wanting to run at 4000+ rpms. Im really starting to think its the manifold > > I have had the thermostat replaced now and the coolant flushed and it > > didnt help it. One person told me to have the overflow cap untighted [quoted text clipped - 23 lines] > >>time. Its a damn shame GM has this self inflicted stinch surrounding them > >>regards to the flagrant intake failures. I bet the system is clogged/blocked with some sludge. > The fan seems to be running and yes i lose coolant when it boils out of > the tank but other than that no i do not. One of the problems i have [quoted text clipped - 36 lines] >> >>them >> >>regards to the flagrant intake failures. > The fan seems to be running and yes i lose coolant when it boils out of > the tank but other than that no i do not. One of the problems i have [quoted text clipped - 3 lines] > wanting to run at 4000+ rpms. Im really starting to think its the > manifold When was the last time you replaced the radiator hoses? I had a bottom hose collapse and it stopped coolent from making it back into the radiator. It would run a few miles then the engine would stop, I could let it cool off and then run a short distance till it overheated again. > > > I have had the thermostat replaced now and the coolant flushed and it > > > didnt help it. One person told me to have the overflow cap untighted [quoted text clipped - 12 lines] > > >>>have talked to thinks its a thermostadt. Would a clogged heater core > > >>>cause a car to overheat. I just drove the car yesterday and about 30 > > >>>min into my drive the car overheated. There was alot of pressure built > > >>>up on the tank when i pulled it over. When going home we kept the cap [quoted text clipped - 7 lines] > > >>time. Its a damn shame GM has this self inflicted stinch surrounding them > > >>regards to the flagrant intake failures. Dexcool is famous for clogging your system, just remove your coolant filler cap and look at the sludge. >I am having a problem with my car overheating. I just drove from > Philadelphia to evansville,in and my car when almost back started to [quoted text clipped - 8 lines] > on but left it a little loose and see if that helped in which it did. > Does anyone have a clue? > Dexcool is famous for clogging your system, just remove your coolant filler > cap and look at the sludge. Blaming the wrong thing again. Sludge in a dexcool system generally comes from 2 things. Rust (cast iron engines) or stop leak. Both will be problems if you dont keep the system Topped Off to keep AIR out. Often if its easier for the system to suck air in through the leak than coolant from the overflow bottle through a 15psi radiator cap. Thus you get a low radiator but not a low overflow bottle. |
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