Question about 1999 Cadillac DeVille

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Okay I been having a problem with my Cadillac deville 99.. The light service engine soon went on and when I'm driving and I make a stop sign or at the light the car turns off. I can turn it back on but than the light check coolant level goes on. It has water and it doesn't leak at because I've checked all the time and it's all way to top.. It only happens in hot weather over 80'

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Check thermastate first, then check fuses, then change water in radiator for 50/50 fluid instead. Take your car to advance auto parts store and have them check for the codes of OBD system to see if the any codes come on.

Posted on May 24, 2011

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You could have a border line blown head gasket,Make sure to make sure the coolant has not mixed with coolant.Do a compression check

Posted on May 24, 2011

  • luisymaria01 May 24, 2011

    How do i make a compression check?

  • robertwilk896 May 24, 2011

    rUN ENGINE UNTIL NORMAL OPERATING TEMP IS REACHED ,REMOVE SPARK PLUGS,GROUND THE DITRIBUTER END OF COILSECONDARY WIRE,INSERT COMPRESSION GAUGE INTO SPARKPLUG HOLE,CRANK ENGINE AT LEAST 4 OR 5 TIMESIN EACH CYLINDER &POSTME BACK WITH YOUR RESULTS POST ME BACK & WE WILL GO FROM THERE OK

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I hope this helps you and anyone else...by the way if your asking why did i replace my engine twice is simply because my cadillac is super clean inside and out, immaculate condition.

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