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2000 Sonoma misfire when warm outside

Tiny
JKGIRAFFE83
  • MEMBER
  • 2000 GMC SONOMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I have a GMC Sonoma 2000 Flexfuel that misfires constantly only when its above 30 degrees outside. It never over heats. If its below 30 degrees it runs fine and sometimes the check engine light goes out.

I've changed the plugs and wires
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Monday, February 7th, 2011 AT 3:27 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check engine light on
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
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Monday, February 7th, 2011 AT 10:34 PM

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