1989 Ford Ranger Car Idle Surges After Warms M Getting Lot Carbon Out Exhaust

276,000 MILES
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the car idle surges after it warms up and I'm getting a lot of carbon out the exhaust I've changed air filter and spark plugs but it did no good
Mar 18, 2013 at 12:39 PM
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BLAZE45
  • ✓Experienced Mechanic
  • 380 POSTS
It sounds to me like you have a vacuum leak. Check for that as well as cleaning the Idle air control valve if it is fuel injected.
Mar 18, 2013 at 4:38 PM
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