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2000 Camaro SS getting code P0171

This is a discussion on 2000 Camaro SS getting code P0171 within the General Help forums, part of the LSx Technical Help Section category; Hey guys, i have a 2000 camaro SS. it has a ported throttle body, ported heads, hooker headers, cats, no ...

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    2000 Camaro SS

    2000 Camaro SS getting code P0171

    Hey guys, i have a 2000 camaro SS. it has a ported throttle body, ported heads, hooker headers, cats, no mufflers, NOS kit with 150 shot, 3.73 gears. I have only had the car about 2 months. all a sudden the service engine light came on. I hooked my obdII sensor to it and it showed a code P0171 (system lean bank1) any ideas why it may be running lean? I cleaned MAF sensor and it still turns on. Thanks

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    Senior Member Orcus79's Avatar
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    could be a bad injector or failing o2.

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    Member DaddySS's Avatar
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    Vacuum leak or exhaust leak near the 02 sensor?

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    Veteran 0rion's Avatar
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    Quote Originally Posted by Orcus79 View Post
    could be a bad injector or failing o2.
    Quote Originally Posted by DaddySS View Post
    Vacuum leak or exhaust leak near the 02 sensor?
    excellent places to start. Being able to datalog the car would tell you quite a bit in a hurry. Since it's only 1 bank I would tend to rule out the vacuum leak...maybe not rule it out but put it at the bottom of that list. Has the car been tuned? It could be tune related too but like I say, a datalog would tell you quite a bit. Maybe one of your Denver brethren will hook you up.

  5. #5
    Pull the spark plugs on that side and take a look to see if one or all look lean. Might tip you off to which cylinder is lean.

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