Question about 1999 Pontiac Grand Am GT

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Coolant boiling overheating and spilling coolant

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Have a compression test done to determine head gasket or cracked head . Check that the fan is operational . IF viscous fan hub and the over heating occurs at idle at lights etc the replace the viscous hub. Have the radiator flow tested for blocked cores and if blocked replace it as flushing is a waste of time . Check hoses and if the hose is soft and enlarged past the clamps then replace them. Have the thermostat removed and checked for correct operation

Posted on Feb 16, 2014

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Posted on Jan 02, 2017

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2 Answers

I drive a Camry V6 3.0L Every time I top up the coolant to the recommended level and after driving the contents in the reservoir boil over and spill out.


There may be a slight head gasket leak to the coolant jacket, not large enough to overheat the engine. It is normal for some coolant to escape at operating temp, but not lots, and it should cool down to about the recommended level again.

Something is pressurising the coolant jacket. Have it tested for the presence of combustion gasses in the coolant. This is a simple test.

Another thing, that model often develops a crack in the radiator plastic top tank. It is not the problem here, but worth knowing.

https://www.youtube.com/watch?v=a3J00_e7fyo

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Car coolant boiling but not overheating what could be the issue? In a 2006 chevy impala


How hot does the engine get in degrees F? If it is boiling the coolant is overheating. Does the radiator fan work? Check the thermostat, check coolant flow through the radiator. Could be head gasket issue? Sometimes air in the system can cause problems? Just my opinion.

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it seems radiator got blocked by rust. please clean the radiator and maintain proper coolent

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if the engine is not overheating, and the coolant tank appears to be boiling, chances are you have a blown head gasket which is pumping air into the cooling system the only escape for that air is the coolant tank

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You have air trapped in system , change thermostat , bleed air from system , let it run hot while adding coolant with blower full blast on all front and rear heaters .

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Overheating coolant boiling out into reserve tank


you have a blown head gasket.. doesn't have to have coolant in the oil for a blown head gasket... if hoses are rock hard when running then you have exhaust leaking into the coolant via a blown head gasket...

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My 1995 325i overheating and the gauge flactuates,i replaced thermostat already,I also noticed that when im driving and change the gear to4th & 5th on a hiway, itgoes faster tothe red zone. also heater...


your car is severely overheating. take it to a repair shop and have it checked. it sounds like you are low on coolant, if you only get cold air out of vents, it usually means you you have little to no coolant in the system. you could have a lot of air in the system also. try bleeding the coolant system.

Jan 27, 2011 | BMW 325 Cars & Trucks

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Coolant boiling out of reservoir, overheating.


Hi,
You have insufficient coolant inside radiator that it boiled during running. Just top your coolant to normal level and re try your car. If still boiled you may have : - clog up radiator or - defective thermostat
Check also the radiator and hoses for leaks.
Regards

Dec 24, 2010 | 2002 Jaguar X-Type

1 Answer

Cooling system overheating


Hi! Theres a coolant reservoit that connects thru the radiator. The coolant level should not be full, it must be just on the HI / MAX indicator. You fill it too much it will spill and leave you with no coolant to circulate. That may be the cause of overheating. HOpe this helps and have a good one!

May 03, 2010 | 1996 Nissan Sentra

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2000 firebird overheating coolant orange color. Was warming up in Driveway.


The coolant was boiling, am I correct in reading that? A muddy, dull orange color is bad. From what you've told me, it sounds like the coolant was never changed. What happened, then, is the coolant that was in there lost its anti-corrosion properties and started rusting out the coolant paths and radiator. The boiling over can be caused by one thing - the thermostat. What most likely happened is either the thermostat froze up or it is clogged with particles of rust and metal. My recommendation to you is to take your car to a radiator shop and have them look at it. If the damage is as bad as I think it is, don't be surprised if they tell you you will need a new radiator, thermostat, hoses and maybe a water pump.

Dec 09, 2009 | 2000 Pontiac Firebird

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