95 olds overheating

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  #1  
Old 02-01-09, 08:15 AM
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95 olds overheating

i'm thinking about replaceing the thermostat first.
but after reading that it could be possible air
in the system. What is the first thing I should look
for.
 
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Old 02-01-09, 09:18 AM
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Coolant level full.
Fans coming on as expected.
Water in the oil (if head gasket's blown, no sense in going any further)

Normally you would only have air after doing some work where a large amount of coolant was lost; water pump, intake gasket, stuf like that.

Does it always overheat or are there some pre-conditions? You can do some troubleshooting before you start turning wrenches. What you might try is taking the radiator cap off and starting it up. Let it idle and monitor the temp gauge as the engine warms up. Also monitor the level in the radiator and the the top hose - touch the top hose; it'll get hot when the thermostat has opened and you will see coolant movement in the radiator. Before the thermostat opens you may get some overflow from the radiator filler; just let it run out. Check the temp gauge when you note the thermostat opens; it should be in the middle, more or less, of the normal range. Play it by ear from there. If the gauge goes higher than normal before seeing coolant circulation, then thermostat would be place to start.
 
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Old 02-01-09, 08:08 PM
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What kind of Olds do you have?
 
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