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  1. #1
    Junior Member CARHAULIN's Avatar
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    2002 Z28

    List of problems

    (1) trouble codes 1153 and 1416
    (2) car lacks power on accel
    (3) auto trans -when shifter is in low
    car starts out in second,half way through
    rpm range it shifts down and has all power it
    should then shifts great?
    (4) small knock on right side of motor
    not has loud after car warms up
    (5) ac comp does not click on yet to here cooling fan kick on
    (6) air does not blow throughdash vents only floor and defrost

  2. #2
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    Let me give a couple a try:

    (1) 1153 is insufficient switching bank 2, sensor 1 02.
    1416 won't hurt performance, probably a clogged passenger side secondary air check valve
    (2) Probably a symptom of the 1153 code?
    (4) Maybe piston slap, my car has done it since day 1
    (5) Check AC fuses/could be low on 134a and pressure switch keeping it off
    (6) That's the default setting for a vacuum leak, check the vacuum lines from behind the intake towards the check valve on the passenger side

    Hope this helps....
    Last edited by 2001NBMZ28; 08-30-2008 at 08:21 AM.

  3. #3
    Junior Member CARHAULIN's Avatar
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    Ill give it a try

    Do you mean 1153 is bad oxygen sensor - and which one
    cant get air valve loose
    checking the rest thank you for your time

  4. #4
    Senior Member Orcus79's Avatar
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    black
    2002 WS6

    The O2 sensor would be passenger side, pre cat. And would most definatly contribute to the poor performance, due to improper fuel metering.

  5. #5
    Junior Member CARHAULIN's Avatar
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    2002 Z28

    Going fix today , how do i erase the codes??

  6. #6
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    Sometimes it's easier to unbolt the metal air pipe from the exhaust manifold so you can remove the valve in a vice or on a bench. There's a gasket under it but most of the time it's reuseable. If it's messed up you can get them at a dealership GM PN 12553617 for a package and they're cheap.

    PCM Reset
    Turn key on, don't start car
    Pull PCM BATT and PCM IGN fuses in engine compartment
    Wait about 5 minutes
    Turn ignition off
    Replace fuses

    This will also reset all the emissions readiness tests and car will be a little grumpy until the idle relearns.

  7. #7
    Junior Member CARHAULIN's Avatar
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    2002 Z28

    New discovery

    Just discovered egr vavle mod has been done
    now what? A tune ?

  8. #8
    Senior Member
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    No EGR tuning or code removal required on the '01 and '02 cars - didn't come with it from the factory.

  9. #9
    Junior Member CARHAULIN's Avatar
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    Oh silly me ,learning alot from site.
    Thanks!!!!!!!!!!!!

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