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1982 - 1992 Pontiac Firebird
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1992 Firebird WILL NOT STOP OVERHEATING AHHHH! Please try and help if you can :) Rate Topic: -----

#1 User is offline   LeRonda 

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Posted 30 July 2011 - 02:39 PM

Ok guys, Idk wtf is wrong with this thing really i have tried everything!! Ok i have a 1992 firebird with a 350 oldsmobile, I have tried to change the thermostat that did not work, so i removed it, My radiator and coolants are good, I replaced the shroud, I have changed the head gaskets, the fan is working and mounted straight to my motor Can anyone else think of anything else? :crybaby: :devilfire:
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#2 User is offline   IceColdMikey 

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Posted 30 July 2011 - 03:25 PM

Welcome to FBN!

Some things to think about are water pump, or possibly a blockage in one of the inner water chambers etc.
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#3 User is offline   LeRonda 

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Posted 30 July 2011 - 03:45 PM

View PostLeRonda, on 30 July 2011 - 02:39 PM, said:

Ok guys, Idk wtf is wrong with this thing really i have tried everything!! Ok i have a 1992 firebird with a 350 oldsmobile, I have tried to change the thermostat that did not work, so i removed it, My radiator and coolants are good, I replaced the shroud, I have changed the head gaskets, the fan is working and mounted straight to my motor Can anyone else think of anything else? :crybaby: :devilfire:



Water pump is good chambers will be the next thing i check ty :)
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#4 User is offline   IceColdMikey 

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Posted 30 July 2011 - 04:23 PM

View PostLeRonda, on 30 July 2011 - 03:45 PM, said:

Water pump is good chambers will be the next thing i check ty :)


YW. Maybe flushing backwards and forwards will clear it. Take the thermostat out as well, and basically remove all water hoses before flushing well with a hose.

Let us know how it goes.

Mike.
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#5 User is offline   LeRonda 

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Posted 30 July 2011 - 06:08 PM

View PostIceColdMikey, on 30 July 2011 - 04:23 PM, said:

YW. Maybe flushing backwards and forwards will clear it. Take the thermostat out as well, and basically remove all water hoses before flushing well with a hose.

Let us know how it goes.

Mike.



Thank you guys so much really i think you guys are a blessing!!:iagree22:
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#6 User is offline   tommie 

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Posted 23 August 2011 - 09:23 PM

is the air dam there if is not that might be the problem
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#7 User is offline   Guro305 

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Posted 24 August 2011 - 08:22 PM

View Posttommie, on 23 August 2011 - 09:23 PM, said:

is the air dam there if is not that might be the problem



That was my second question. My first one is how do you know your radiator is good? I've seen plenty of radiators that appeared to flow good and were still screwed.
As far as the airdam, if it's missing the car should not really overheat too much unless you hit the highway. Once you hit the highway that's when you should start seeing the overheating of the car after a view minutes at a high mph.

When is it that the engine begins to overheat?
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#8 User is offline   superglide75 

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Posted 05 September 2011 - 09:16 PM

Taking your thermosyay out will make it run hotter.Moroso makes a package of 4 washers ,Each one runs your engine at a different temp.ypu use one to replace thermostat,They cant fail they are just a cooling system restrictor,How old is your antifreeze.
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#9 User is offline   Blacksheep 

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Posted 14 September 2011 - 07:03 PM

i agree on a blocked passage make sure all coolent passages are free and "just saying" make sure the head gaskit was put in correctly if placed wrong it will block water passages. Also yes air dam is only effective for highway driving intown it will not have a noticable effect. and removing the thermostat can be a bad thing it will push fluids too fast through the engine and radiator causeing ineffecient cooling.

1 flush ur radiator make sure it flows ok
2 put a 160 thermostat in the car and drill a small hole in it to allow some fluid to pass thorugh closed or open (helps with flow)
3 flush the intire engine by removing your radiator hoses and supplying water to your thermostat neck
4 with the engine cold provide the water pump with a water hose or whatever and see if its pumping the water through
5 pull your heads off again and pull the water pump off check and blow the passages through with air or water to make sure there clear
6 make sure the head gaskit is put on correctly to insure the water passages will be clear of the gaskit
if none of this works then mabye its the 350 olds motor in a 3rd gen which in that case u made need a 4 core radiator alot of the older motors required a 4 core radiator to cool correctly

i hope this helps best of luck
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#10 User is offline   1991_RS -> 1989 Formula 

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Posted 10 June 2012 - 05:14 AM

Had an issue with my 91 RS running hot (but not totally overheating) at idle. Third generation F-body cars are notorious for running hot, especially with V8s.

Turned out that the stock cooling fan temp switch was not turning the fan on early enough (verified with a mechanics OBD scanner that showed my operating temp).

On the Third Gen site, there's a good post about that. Swapped out the old sensor/switch with a GP Sorensen FS6 (turns on at a lower temp) and never had another issue after that.

If you are sure that the cooling system is clear and flowing, and your air dam is in place, I'd check the fan switch.
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