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04-29-2007, 04:41 PM | #1 | |
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Stuck Accelerator(Idle)
After going highway speeds and letting off on the gas pedal, the car will continue to hold or loose speed down-to 53 mph. It will hold there for a minute or so, then drop to around 35 mph(depending on road and wind). The car will stay indefinitely at this speed. After applying breaks you can still feel the motor pushing and makes breaking harder. But after stopping, engine idle is normal, if only a little low.
I put in a new IAC and cleaned the seat, the only difference was 60 bucks. Vacuum hoses appear OK. A new computer fixed a misfire problem. Any ideas, please. 89' Electra
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04-29-2007, 05:39 PM | #2 | |
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Re: Stuck Accelerator(Idle)
Thread moved from Electra to Park Avenue at OP's request due to higher traffic and better chance of replies.
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04-29-2007, 06:09 PM | #3 | |
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Re: Stuck Accelerator(Idle)
Have you checked for codes? Usually, the TPS will send a high ,or low voltage code for this condition. You could also have low fuel pressure and the ECM is trying to compensate by richening the fuel curve, therefore, altered idle speed. Check fuel pressure and TPS voltage at idle and partial throttle. Range should read, between .40v @ idle, to 4.5v @ WOT. Fuel pressure should be 38-45 psig @ idle.
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05-01-2007, 08:46 PM | #4 | ||
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Re: Stuck Accelerator(Idle)
Quote:
Get this, the light goes out on medium to hard acceleration and goes off at cruise or idle. Advanced Auto retrieved the codes for me and they are: Current Code 22- Throttle Position Sensor Signal Voltage is too low History Code 22- Throttle Position Sensor Signal Voltage is too low BTW. No check engine lights before I replaced TPS. I will have to find someone to check fuel pressure for me. Anything else that I might be able to do here? '89 Park Avenue Thanks |
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