Question about 1999 Chevrolet Cavalier

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2002 Cavalier 2.2L Lost heat and engine is overheating. I am not leaking any antifreeze. I replaced the thermostat but that didn't resole anything. Help!

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Is the radiator fan turning when the car is on?
if so, your problem is the water pump.
Replacement is required.

Posted on Jan 11, 2009

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2 Answers

Antifreeze dumping on passenger side. Will not go 2 miles without overheating and needing more antifreeze.


All GM cars from 1994 to on up the 3100/3400 engine is famous for bad intake gaskets. When the gasket goes you loose coolant by either externally outside the engine or internally inside the engine. Check the oil for overfull condition and it will look like bright orange or milkshake color. Also if you drove on it overheating or if its full and overheats right away you also blew a head gasket. A compression test will confirm this. If you replace with good gaskets with the metal and rubber type do not use the plastic cheaper version. Then the intake gasket leak will never happen again.

Nov 26, 2013 | 2002 Chevrolet Malibu

1 Answer

Overheating


You have a head gasket problem with the engine generating abnormal pressure, and sending all the antifreeze to the reservoir, thereby leaving the engine running dry; it is dangerous for the water pump to operate with no water.
Drill 3 11/64 or 3/16" holes in the thermostat side facing the engine, making sure not to touch the opening mechanism; this will keep antifreeze always running thereby, compensating for the abnormal pressure regenated by head gasket leak(s).
Your thermostat was never your problem.
In cold weather, 5 degress celsius or under, the thermostat takes longer to open and more antifreeze will be sent to the reservoir leading to an overheating.. Partially cover the radiator with a sheet metal piece to make the thermostat open faster and stay open, as the antifreeze is not being cold that much by cold air. You're fooling the cooling system into warm weather driving.
Don't waste your money buying radiator stop leak or liquids to repair head gaskets; this will only corrode and make your radiator to eventually leak.

Dec 29, 2012 | 1997 Oldsmobile Silhouette

1 Answer

What causes oil to get in antifreeze


Driving the truck without a thermostat won't necessarily hurt the engine. It will take longer to get heat and it will be sporadic because the coolant is always circulating. Oil in antifreeze could come from 2 places, transmission cooler in rad if you have an automatic. The lines inside will occasionally start leaking. The other is from the engine, usually a head gasket leaking. My suspicion is that you have a leaking head gasket. This would explain the over heating with oil in the coolant. Take it in and get a pressure test on the rad or a compression test on the engine. This should confirm or eliminate the head gasket. Hope this helps.

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4 Answers

Overheating


there is a coolant cap on the overflow bottle check it for seal
i'd just replace it
also if you put the new thermostat in backward the overheating would be significant

Apr 21, 2009 | 2000 Lincoln LS

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Overheating and antifreeze in oil


The cylinder head gaskets are leaking, u will need them replaced, the heads checked for true and the oil pan flushed to get the water/coolant out, make sure u figure out why it overheated before any repair begins or the same thing will happen again.

Mar 24, 2009 | 2002 Oldsmobile Alero

1 Answer

2002 Chev Cavalier 2.2L Engine overheating


Did you let engine run from cold after refill, with rad cap off & heater on (not defrost) until the engine reached operating temperature and rad fan came on a few times? If not, try it, you may just have an air lock, provided your sure thermostat is correct one & back in correct way. Rev engine slightly every once in a while and hold it there for approx 10-20 seconds to help burp the air out & increase circulation to heater.

Jan 11, 2009 | 1999 Chevrolet Cavalier

1 Answer

02 Alero not overheating, no heat


When you say not leaking antifreeze has your coolant level gone down at all? and is it that you have seen no leaks where you park it? What worries me is you can smell it when warming up, have you felt the interior floors to see if damp and do you get any condensation if put blower onto screen, if so then heater matrix is leaking if not could be down to headgasket and/or cylinder head leak.

Dec 11, 2008 | 2002 Oldsmobile Alero

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