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Engine Trouble Codes

This is a discussion on Engine Trouble Codes within the General Help forums, part of the LSx Technical Help Section category; Got a new computer and cant find the cd for my code reader, my hypertech max performance programmer came up ...

  1. #1
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    1999 Z28 Camaro

    Engine Trouble Codes

    Got a new computer and cant find the cd for my code reader, my hypertech max performance programmer came up with 2 codes P0138 and P0327. Can someone please help me and tell me what the codes mean?

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    I know mine had a P0136 which was oxygen sensor related. We need more info on your car(modifications, mileage, service records).

    Just looked online:

    P0138-downstream O2 sensor high voltage

    P0327-Knock sensor fault
    Last edited by cammed goat; 11-27-2011 at 11:26 AM.

  3. #3
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    1999 Z28 Camaro

    i replaced the knock sensors before so i hope its not that. i also replaced 1 o2 sensor and maybe this 1 needs replaced now. i cleared the codes and am going to run some injector cleaner through it. the car sat for a while so im hoping it will be a quick fix. thanks everyone for your help

  4. #4
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
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    If you overtightened the knock sensors, then you could be getting a "false knock" where the sensor is so tight, it pics up EVERY vibration in the engine. Try the fuel injector/system cleaner and get back to us with your results.

  5. #5
    Former Mopar Man 2002ssslp's Avatar
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    02 Camaro SS, 04 GTO

    Use Techron, it costs a little more but it really works. Some of the others are just dry-gas.

  6. #6
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    Well I put Lucas injector cleaner and fuel treatment in it. I've only put 6Lucas or 7 miles on it but so far so good. Hope that took care of the problem. Thanks for the advice

  7. #7
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
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    OK. If anymore issues arise, let us know.

  8. #8
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    All is good still, think it just needed some fresh gas run threw it. Thanks to everyone

  9. #9
    Smiles for 9.5 Years cammed goat's Avatar
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