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Im needing help with an issue, I ported my intakes and replaced my head and intake gaskets. But after 2 weeks ma malibu started running too lean, theft system comes on, and when turning left or right the engine dies and shuts off. Took it to get the codes checked and shows a misfire and catalytic converter failure. Sometimes it runs fine, sometimes it runs lean or rough and sputters and acceleration is horribly affected. Half the time it just diesn shuts off. The car is lightly modified, stage3 with 3" intake, 2 1/4" exhaust pipping, ported intakes, 8.8mm racing spark plug wires, with e3 plugs. Can anyone gie me any tips on how to fix this issue.
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Last edited by gmmalibu; 11-26-2010, 09:47 PM. -
Change the cat ?
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What year, make, Model and engine?
any codes? does engine temp effect when it does it or not (HOT or COLD)? hows the idle? did you check for a vac leak (spray carb cleaner around intake gaskets)? have you done a fuel pressure test? Any other symtoms (electrical items stop working...) Ground or short?
May want to post this in the Pushrod Section of the forum... has more watchers then the boost section.Shane "RedZMonte"
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