runs rough untill 3000 RPM
04-27-2005, 06:43 PM
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Join Date: Feb 2005
Location: Columbus, Ohio
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runs rough untill 3000 RPM
My 1994 z28 just had a major electrical tune up. I replaced the opti, new plugs, wires and even a new waterpump. It now runs rough untill 3000 rpm and then it runs great . I just spent a fortune and really don't to take it to an expert yet. It has 107,000 miles and no codes appear on a scanner and the check engine light doesn't appear .........what could be the problem ?
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