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

Rough idle mostly fixed

Old 06-23-2015, 08:40 PM
  #1  
mlm0
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Default Rough idle mostly fixed

1989 automatic, 49000 miles, stock

I have had a rough idle condition for over 2 years, which is how long I have owned car. I did every thing I knew to do, and replaced parts I thought would help. Did all the tune up stuff and used FSM for every thing, yet the idle remained rough. Thanks to researching on this forum I found a solution I re-gaped all my plugs (FR5LS) from .035 to .045. Because of the way I am, it will never be perfect, but the idle is so much better now, and runs great up to at least a 100. I would not go any faster

Great forum and great people, you just have to have a little bit of thick skin every once in a while

Last edited by mlm0; 06-24-2015 at 10:57 AM.
Old 06-24-2015, 10:19 AM
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Joe C
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Originally Posted by mlm0
...you just have to have a little bit of thick skin every once in a while.
ain't that the truth!


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