Question about 1999 Pontiac Bonneville

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Sputters When Idling

I have a 99 bonneville that sputters when idling. but when accelerates fine. what could the problem be? i also need the firing order for the same vehicle.

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Clean throttle body intake ,,,run cleaner, thru injectors or carb, check all air hoses and tighten,check air filter,,,check idle air,,,or replace idle air,,,they go bad

Posted on Aug 22, 2009

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