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overheating 02 z-28 (not sure)

This is a discussion on overheating 02 z-28 (not sure) within the General Help forums, part of the LSx Technical Help Section category; I have a 02 chevy z-28 that I love to death. Today something happen to it. It all of a ...

  1. #1

    overheating 02 z-28 (not sure)

    I have a 02 chevy z-28 that I love to death. Today something happen to it. It all of a sudden started overheating from 210 degrees then to the red. I continued to drive and all of a sudden the needle went right back to the temp it was supposed to be within a matter of a second. It was kind of like it was a glitch. But then about 20 minutes later is did the exact same thing again. i checked the engine while it was in the red and it was not hot at all. I could even touch the engine block without burning myself. i drove it tonight and it still kept doing the same thing. Does anyone know what could be causing this. It will be in the red for about 30 second then shoot right back to 210 which is where it is at normal. Even it was over heating it could cool of in a matter of a second could it? The car is bone stock (nothing at all on it). Thanks for the help.


  2. #2
    Senior Member SeVeReDiStOrTiOn's Avatar
    Join Date
    Aug 2005
    Roseville, CA

    05 Wrangler
    00 Z28 sold :-(

    ehhh...maybe you have air in your system,try bleeding it out. Could also be your coolant temp sender for your gauge...but i just got my ls1 a few weeks ago so i'm not exactly sure how many there are

  3. #3
    Junior Member
    Join Date
    Aug 2005
    Here and there

    2001 Z28

    Check the basics.

    Is the coolant level ok
    Do the fans work
    Turn on the A/C both fans should come on

    Flush it and fill it
    Replace the radiator cap get the one from the dealer the aftermarket ones suck at holding. These cars are old enough for a good flush and fill, and cap replacement. I don't buy that 100k coolant change bs chevy says.

    Start checking electrical, sensors ect.. after the cap flush and fill.
    Just my .02 cents..

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