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. 0 Thanks, 0 Likes, 0 Dislikes
how much did that downpipe cost you? 0 Thanks, 0 Likes, 0 Dislikes
sounds like a coilpack 0 Thanks, 0 Likes, 0 Dislikes
coolant leak? could the upper intake be leaking? intake gaskets ever been replaced? 0 Thanks, 0 Likes, 0 Dislikes
