Question about 1989 Chevrolet Cavalier

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89 z24 chevy caviler

Replaced 2.8L with 3.1L, it will not idle right and popping backfiring in throttle body. Replaced o2 senser idle air motor and throttle positioning senser .

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Check the vacuum hoses to the throttle body

Posted on Jan 17, 2009

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Hi,did you replace the engine computer(ecm)?

Posted on Aug 13, 2008

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