can someone help me out a little bit

  1. TheGreatSamG
    TheGreatSamG
    I have been upgrading my 98 gtp for the past month and doing basic maintenance.

    valve cover gaskets
    fuel injectors cause of cylinder injector randomly sticking
    zzp downpipe w/cat
    zzp pcm 1.0
    crankshaft position sensor cause randomly my rpms would drop

    i had to take out the voltage booster cause it was making my car misfire. mechanic says that there was no voltage goin to injector 5. but after i took out the voltage booster it stopped misfiring at idol

    and within the past couple of weeks its been misfiring alot. runs smooth in idol. but as i floor it-misfires. after 2000rpms-misfires.
    if i put it in neutral and floor the pedal it wont misfire. just seems as if it only does it in gear or in park. check engine light came on the codes that popped up were P0205, P03513, P1652.Oh and i keep finding antifreeze in the pockets where my front 3 injectors are. all my hoses are brand new. and its a big leak from where ever its coming from. just doesnt leak if it sits there.
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  2. Spork
    Spork
    how much did that downpipe cost you?
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  3. JLiss
    JLiss
    sounds like a coilpack
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  4. kmohr3
    kmohr3
    coolant leak? could the upper intake be leaking? intake gaskets ever been replaced?
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