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Head Gaskets and Valve Covers
Antifreeze and Engine Coolant
Ford Expedition Eddie Bauer
1982-1994 Chevy Cavaliers

Is slight but constant oil seepage from the head wo coolant loss or overheating 89 cavalier a sure sign the head gasket needs replacing?

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2005-11-24 15:14:24
2005-11-24 15:14:24

I'd be more suspicious of a rocker cover gasket. If you're sure it's the head, try re-torquing it first.

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Low coolant, bad coolant tank cap, stuck thermostat, or clogged coolant line.

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If it's overheating, it cold be thermostat, radiator or possibly other problems. If it's not overheating it could be the coolant level sensor.

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high resistance coolant temperature sensor, is it overheating,air in coolant pipe at sensor, or bad sensor,

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form_title=Flush the Coolant form_header=Keep the cooling system running properly by regularly flushing and replacing the fluids. What type of coolant do you normally use?=_ How long as it been since the coolant has been flushed?=_ Have you had any overheating problems?=_

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A 1997 Chevy Cavalier uses a standard 50/50 mix of antifreeze coolant and water. This keeps the engine from overheating and from freezing in the winter.

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Replacing a bad water pump can help to stop a motor from overheating. Hopefully that was the cause of the overheating. If it does not stop the overheating, try replacing the thermostat. Make sure you have the proper mix of antifreeze and water, the radiator filled with it. Check the level of coolant FIRST. Next, the hoses, and third the thermostat. Then, disconnect a hose and see if, by starting the vehicle, if there's water pressure. If not, its water pump time!

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Low coolant? Radiator plugged or restricted? Water pump not circulating coolant? Thermostat not opening? Cooling fan not working? Hoses collapsing under pressure Defective radiator cap?

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A 1992 Cavalier could be overheating for several reasons. The Thermostat could be bad, the coolant could be low, or the water pump may be failing. The cooling fan could also be bad.

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Check the coolant levels. Insure that the cooling fan turns on when its supposed to, and the thermostat is not stuck closed. Make sure that the water pump is operating correctly.

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No thermostat, no coolant, no waterpump. Basically you have no coolant circulating.

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coolant temperature switch turns on the fan, if the fan isn't running the car's overheating...it's a sensor mounted in the coolant line that detects coolant temp.

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Very possibly. You can check a spark plug and see if they are wet or you can see if there is gasoline in the coolant liquid.

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Coolant light, meaning low coolant, or overheating.

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It is possible that the gasket could leak between cylinders. The overheating and coolant loss would happen if the gasket was failing around the coolant passages.

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Low coolant? Radiator probably needs flushing and/or replacing after 40 years. Bad thermostat? System airbound? Water pump not circulating coolant? Hoses collapsing? Bad radiator cap?

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AnswerThis is a symptom of an overheating engine. See "Related Questions" below for an excellent trouble-shooting guide to overheating problem.

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The most common cause of overheating is a thermostat stuck in the closed position. Other causes of overheating could be a clogged radiator, faulty water pump, a faulty radiator fan relay, a faulty radiator fan motor, no coolant or low coolant level.

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A coolant leak on a 93 cavalier could be anyplace where coolant flows. Check all hoses, connections, the radiator, and heater core for any possible leak spots.

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Thermostat not opening correctly, low coolant level, poor coolant flow (i.e. clogged radiator), head gasket, radiator cooling fan not operating correctly, if it is boiling over,posible weak radiator cap.

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Either low coolant level or the engine is overheating.

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Too little coolant, or a plugged coolant line.

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I'm not a mechanic but, I had to replace my radiator to fix the overheating problem on my 1994. That was the last thing I replaced after replacing the water pump, thermostat, and replaced my fan with a clutch fan. have not had anymore problems with it overheating once the radiator was replaced. Flush the coolant first then replace the radiator. Hope this helps.

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You will have to replace the refrigerant, but not the engine coolant.


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