Question about 1994 Ford Thunderbird

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Engine is revved up like the throttle is stuck and won't idle dow

We have already replaced the throttle positioning switch and tried adjusting down the idle manually.

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  • deborah_gibs Jan 22, 2009

    revs up as high as 1200-1400rpm and is that way the minute you start the car. Someone told me it could be the air flow sensor, but, I would like to be sure because that part is very expensive.

  • deborah_gibs Jan 22, 2009

    Is the air control motor the same as the air flow sensor. If so, O'reilly's has quoted me one for $100.00 and one that is $245.00. I hate to keep pouring money into the car without knowing for sure. I was also told that an oxygen sensor can sometimes go out and cause this. We reset the computer and the problem didn't go away.

    D. Gibson

  • Roberta Smith
    Roberta Smith May 11, 2010

    is the check engine light on ? ... if so go to your nearest autozone and have them scan the codes... they should be able to tell you what they mean... or write them down and post them here


  • Roberta Smith
    Roberta Smith May 11, 2010

    i have to go with the merely obvious first as i almost missed this on another ladies car once.... check that the carpet has not ridden up and pressing on the gas pedal.


  • Roberta Smith
    Roberta Smith May 11, 2010

    how hi are the revs and are they constantly high as soon as you turn on the key ?

  • Anonymous Mar 21, 2014

    adjusting the throttle valve



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Idle air control sesnor could also be the culprit . If so its not real hard to find sits on the plenum its probably black or silver in color . When the go out it can cause it to not idle at all or wide open.Shouldn,t be that exspensive as far as the part is concerned i'd say around 50 or 60 maybe .Hope this helps

Posted on Apr 01, 2009

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Sounds like you have a bad Idle Air Control Motor. These are usually less than a hundred bucks at your local auto parts store. Good luck to you and thanks for using fixya!



Posted on Jan 22, 2009


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Some throttle position sensors are adjustable. Follow manufacturer's instructions.
  • On older engines, correct adjustment is crucial to proper system operation.
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Incorrect TP sensor adjustment may cause:
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Follow these steps to adjust a typical TP sensor:
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  • Turn on the ignition switch and observe the voltmeter reading with the throttle in the idle position.
  • If the TP sensor does not provide the specified voltage, loosen the TP sensor mounting bolts and rotate the sensor housing until the specified voltage is indicated on the voltmeter.
f32-29.gif A TP Sensor with elongated slots for sensor adjustments. Courtesy of General Motors Corporation - Chevrolet Motor Division.
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Most throttle position sensors are made so that their adjustments are tamperproof. They have screws that are either soldered or staked.
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1 month ago replaced catalytic (sp?) convertor, battery, starter switch and now the check engine light came on and the car is revving high at times while driving

replacing these items won`t cause your will have to find out what code set the light and go from don`t say if the revving is at idle or not if it is you could have a bad idle control motor or a cracked vacuum hose that acts up at certain times.even a bad throttle position sensor(tps),egr valve,so its important to know what set the light on.

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1996 Ford Thunderbird V8 4.6L Idles High. When starting up engines does not idle down after warming up. When driving car just wants to speed up.

check your throttle body make sure all the springs are connected. your throttle body may be nasty inside and may need cleaning, it may be getting stuck. Throttle cable could be sticking or disconnected (there are two one pulls and one returns to idle IIRC)

also you should really search and become a member there if you are not already.

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