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No Error codes - poor running LS1

This is a discussion on No Error codes - poor running LS1 within the General Help forums, part of the LSx Technical Help Section category; Hey everyone, I'm new to the site but have owned my 2000 WS6 for 9 years. I'm having a performance ...

  1. #1
    Junior Member
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    red
    2000 WS6 TRANS AM

    No Error codes - poor running LS1

    Hey everyone, I'm new to the site but have owned my 2000 WS6 for 9 years. I'm having a performance problem that seems to be getting worse. I occasionally spudder under normal driving conditions. It feels like I lost my fuel pressure or have no fuel to the injectors. I don't get an error code, I have 55-60 psi at the fuel rail, I have reset the error codes, changed spark plugs, cleaned the throttle body, changed plug wires, changed 2 o2 sensors and am now in process of checking vacuum system. My car will run okay most of the time after it is up to speed but when I push on the pedal hard the car will drop out or then surge if I keep the pedal down. it was a daily driver but has not had many miles put on it in the last 2 years. I thought it was a transmission problem at first and then the dealer told me it was a fuel pump problem? If I have 55-60 psi when I'm driving how can I be sure the fuel pump is bad???

  2. #2
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    red
    2000 WS6 TRANS AM

    found the problem!!!!!!!!!!!

    After looking through some Threads and inspecting my Intake Air Temp. sensor I found that it had no resistance at all...it was wide open......I got a new one from AdvanceAuto for 12.99 and cleaned the MAF.....running like a champ.....I got my 325 horses back.........

    ******The dealer wanted 1300$ to pull the fuel pump out and replace it******LS1.com just saved me a lot of cash..............


    Thanks, Matt

  3. #3
    Wow nice you were able to find your trouble on your own. Didn't it set any codes?

  4. #4
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    glad to hear you got it running right.

  5. #5
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    red
    2000 WS6 TRANS AM

    Yeah....no codes except for an occ. 02 sensor code when I was running it hard to diagnosis the problem???

  6. #6
    Member DaddySS's Avatar
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    2000 Camaro SS Conv.

    Excellent, and thanks for updating us.

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