argh still overheating [Archive] - GrandAmGT.com Forum

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brian19876
03-29-2004, 04:59 AM
on my 96 grand am 3.1 v6 it still over heats at random this is what ive done so far ive changed the water pump, thermostat,had the car back flushed, changed the cooolant resivior cap bleed the air out of the system using the bleeder, checked the fan it is running i took a 30min trip it was fine went to store later on the way back started to overheat again and the coolent was coming back out the cap where i poured it in this is driving me crazy any other ideas would be helpful thanks before i drive the car over a cliff

Gt00
03-29-2004, 10:07 AM
Originally posted by brian19876
on my 96 grand am 3.1 v6 it still over heats at random this is what ive done so far ive changed the water pump, thermostat,had the car back flushed, changed the cooolant resivior cap bleed the air out of the system using the bleeder, checked the fan it is running i took a 30min trip it was fine went to store later on the way back started to overheat again and the coolent was coming back out the cap where i poured it in this is driving me crazy any other ideas would be helpful thanks before i drive the car over a cliff Did you have the system pressure tested ? Make sure it holds pressure with no leaks . Check all hoses to make sure they are not blocked internally . Since you say it happens at random , i'm thinking you could have an intermittant cooling fan problem . The fan may not be on all the time while driving . Hope this helps . :)

JawnyRico
03-29-2004, 11:04 AM
Quick stupid question, did you use the correct coolant? Same as the book tells you to use?

brian19876
03-29-2004, 12:23 PM
i have not had the system pressure tested but i am using the right coolant dex with 50/50 mixture

slowassgtx
03-29-2004, 07:31 PM
check for intake gasket leak. Big problem with 3.1's

brian19876
03-31-2004, 09:28 AM
this is strange the car is still overheating but if i bleed the system and start the car the car will run fine i had the car running for 4+ hours and no overheat but if i shut the car off for a few min then restart it with in a few min it starts to overheat again some how im getting air in the coolant system when i shut off the car after it warms up has anyone ever seen this its driving me crazy

Sprucegagt
03-31-2004, 11:27 AM
Sounds to me like you have a collasped lower radiator hose. Watch the hose after you let the engine cool off and see if it flattens(sp) out. If so, change the hose.

brian19876
03-31-2004, 11:56 AM
does anyone know were i can get a coolant flow diagram for my 96 3.1 system can't figure why its over heating and want to try to find out if im missing somthing

JawnyRico
03-31-2004, 03:23 PM
not sure if this is want you want but you can try it......

http://autorepair.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.familycar.com%2F CoolingSystem.htm

JawnyRico
03-31-2004, 03:25 PM
try also this page, might learn something new...

http://autorepair.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fmembers.aol.com%2Fca rleyware%2Flibrary%2Foverheat.htm

brian19876
04-05-2004, 06:02 AM
took car to dealer to have it looked at they said intake manifold gasket was bad but how would that make the car over heat except for if i would lose alot of coolant

Gt00
04-05-2004, 08:54 AM
Originally posted by brian19876
took car to dealer to have it looked at they said intake manifold gasket was bad but how would that make the car over heat except for if i would lose alot of coolant This is why i asked if you had it pressure tested . If you have a leak your system will not hold pressure , and will overheat easier .