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1999 Oldsmobile Cutlass Question: overheating?

 

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jouna, Fairfax, VA, August 18, 2009, 15:32
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I just got a 99 cutlass. It has 150,000 miles on it. The temperature gague shows it going almost, but not in, the red. The thermostat was replaced, the coolant system was flushed, and the mechanic said the pressure test didn't show anything, but it still looks like it is running hot. Any ideas?

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  • Answer #1

    lawrenceg August 18, 2009, 17:35
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    Check the radiator and the radiator fan operation. Have the shop use an infrared temperature gun to determine that the engine is actually running hot, it could be a gauge or sensor problem too. Good Luck, let us know what they end up finding out!

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    patrick mannion from Greg Solow's Engine Room, August 18, 2009, 21:33
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    I agree with Laurenceg. I would also ask a shop to check that the radiator is not internally restricted, check that the cooling fan is operating correctly and do a "block check" (which is a chemical check to test for the presence of carbon monoxide in the cooling system which would only be present in the case of a blown or slightly blown head gasket). Would love to know what turns out to be the problem.

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    Visitor, March 11, 2011, 02:13

    i agree with u on this one Patrick i also have a 1999 cutlass had the same problem did the same thing as this guy change thermostat had system flushed worked for 3 dayz then boom busted gasket and coolant leaking everywhere.

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  • Answer #3

    rigga January 16, 2010, 11:35
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    check to make sure the fans on the radiator are working. they should kick on once it heats up. mine just went out and i'm trying to figure out whats wrong

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  • Answer #4

    Visitor, March 11, 2011, 02:19

    check the radiator for blockage or debris. always a good thing to do. i also have a 1999 cutlass. had same problem. so i would go with patricks theory on this issue and get the head gaskets checked. cuz mine blew out and was fortunate to not have coolant get in to the oil.

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