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1990 Chevy Corvette rough idle

Tiny
BOBBY ROGERS
  • MEMBER
  • 1990 CHEVROLET CORVETTE
  • V8
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
I have a 1990 corvette with 175,000 miles that has a rough idle after warming up. It acts like it is misfiring or runnings on 7 cylinders. I have changed plugs wires dist cap and rotor. It will surge and not hold a steady speed with the cruise control on. I have just replaced the throttle positioning sensor. And had the vacuum lines to EGR cleaned and checked all are now OK. When the engine warms up it acts just like it did before all this. Any ideas?
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Wednesday, December 17th, 2008 AT 3:08 PM

1 Reply

Tiny
FMC1956
  • MEMBER
  • 2 POSTS
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Thursday, March 5th, 2009 AT 10:12 PM

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