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C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

roughty idling

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Old May 3, 2010 | 05:43 PM
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evil1knevel's Avatar
evil1knevel
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From: Binghamton New York
Default roughty idling
I need your input
1989 Vette 91,000 miles
I replaced plugs, wires, ect
air filter clean, new gas filter
starts right up idles great
runs great
but at lite or stopped position
idles very rought

any suggestions
Cats plugged???
Thanks
Evil1knevel
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