Fast Idle

FORD THUNDERBIRD
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TLAW111
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I have a 1992 ford thunderbird 3.8 litre with 130,000 miles. the car ran fine one day i started it and the idle went to 2500 rpm's I changed the M.A.S. no help changed the T.P.S. no help any suggestions on what to do next ?
Aug 4, 2007 at 7:41 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
[quote:403b8beaf0="tlaw111"]I have a 1992 ford thunderbird 3.8 litre with 130,000 miles. the car ran fine one day i started it and the idle went to 2500 rpm's I changed the M.A.S. no help changed the T.P.S. no help any suggestions on what to do next ?[/quote:403b8beaf0]

Could be coked-up throttle plate and an ISC device-take it out and clean. Could also be a vacuum leak.
Aug 12, 2007 at 5:09 PM
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