1996 Cadillac Seville running hot? (or not) help needed
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Northstar Engines and System Technical Discussion Discussion, 1996 Cadillac Seville running hot? (or not) help needed in Cadillac Engine Technical Discussion; Hello all, I have owned a 1996 Cadillac Seville for the past few years, and since I've owned it regardless ...
  1. #1
    Frankma is offline Cadillac Owners Member
    Automobile(s): 1996 Seville STS
    Join Date
    Jun 2003
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    1996 Cadillac Seville running hot? (or not) help needed

    Hello all,

    I have owned a 1996 Cadillac Seville for the past few years, and since I've owned it regardless of weather conditions the temperature needle has always been more or less at dead center once the engine has fully warmed up.

    In the last week it has gone as high as the last white mark before going into the red zone, but fluctuates wildly at times between that point and the midpoint, but it does eventually go down.

    Do I have a problem here? Coolant level is fine and both fans are going on.

    In a technical sense, according to the gauge the car isn't overheating, but it still represents a wide departure from my usual results.

    Is this anything? Should I bring this to be checked out?

    What could possibly be causing this?

    Thanks everyone.

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  3. #2
    majax's Avatar
    majax is offline 32V Northstar
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    The Great Northwest
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    Re: 1996 Cadillac Seville running hot? (or not) help needed

    Well if both the fans are on its really hot. I could only guess the water pump is goin or your thermostat.

  4. #3
    Marshall is offline Cadillac Owners Member
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    Tehachapi, Ca.
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    Re: 1996 Cadillac Seville running hot? (or not) help needed

    Check the water pump belt for wear and ensure the tensioner pivot is not seized. The thermostat might be the problem [easy to change]but use ONLY a GM part. My 94 Eldorado runs 8 to 12 degrees cooler with the GM thermostat.Search the forum for threads on overheating, thermostat,etc.
    Marshall

  5. #4
    foo
    foo is offline Cadillac Owners Fanatic
    Join Date
    Oct 2003
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    Re: 1996 Cadillac Seville running hot? (or not) help needed

    I'd check the pump belt, check for codes, check for leaks. If nothing maybe simply try replacing the belt and the thermostat... or the temperature sender could be going bad.. Normal operatin is dead center with occasional tips to the right slightly then the fans come on and it goes right back to dead center.

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