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  1. 07-23-2007, 05:35 AM #1
    gareth001
    gareth001 is offline
    Collecting V8's
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    1999 Camaro Z28

    Pump sounding noise

    Hi,

    When I restart the car from warm, normally within 4 hours of last running it to operating temp. I get a loudish pump noise for about a minute from the engine bay. It then goes away. This never happens when I start the car from cold.

    Any Ideas?

    Thanks

    Gareth
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  2. 07-23-2007, 06:21 AM #2
    Corey1987
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    1998 Z/28

    could it be ur AIR pump?
    http://img519.imageshack.us/my.php?image=wheelieke5.jpg361hp 351tq 98 Z/28 A4 SLP Lid/Smooth Bellow/LM2 K&N Filter Pacesetter Headers TSP Y Pipe Z06 Style Wheels B&M shifter Yank 3200 Prothane Motor/Trans Mounts Torquer V2/7.425" p-rods/Comp Springs
    $, the replacement for displacement.
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  3. 07-23-2007, 09:51 AM #3
    gareth001
    gareth001 is offline
    Collecting V8's
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    1999 Camaro Z28

    Thats what I was thinking before reading other posts, but all the problem/features were about cold starts, not hot ones!
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  4. 07-23-2007, 02:33 PM #4
    Corey1987
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    if i were u, id unplug my AIR pump and see if it still makes that noise, if it doesnt, uve found the culprit.
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