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Thread: ls1 runing fat

  1. 05-02-2011, 04:06 PM #1
    gbsss
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    Smile ls1 runing fat

    what sensor or could cause to run fat thanks gary
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  2. 05-02-2011, 04:48 PM #2
    35th-ANV-SS
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    The most common part that can cause a car to run rich is the O2 sensors. There are many other causes, a leak in the intake, leak in exhaust before the O2 sensors, cracked or disconnected vacuum hoses, fuel pump, clogged fuel lines/filter.

    Do you have any codes?
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  3. 05-02-2011, 05:59 PM #3
    pajeff02
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    ^^ What he said. What makes you think it is running rich?
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  4. 05-02-2011, 06:01 PM #4
    35th-ANV-SS
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    Is there black soot in the tail pipes? Also, if you pull a plug, most likely you can tell if the car is running rich if they look black.
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