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 2:41 PM
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RASMATAZ
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[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 13, 2007 at 12:09 AM