V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Fast Idle and O2 Sensors 95 St

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Old 09-30-2003, 08:55 PM
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dougc
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Default Fast Idle and O2 Sensors 95 St



Everytime i start up my car, it goes up to 2700RPMs and when i put it in park. Its almost like i am pressing on the gas when i first start it up. Anyways here is what i have done to it so far.

I took it to AutoZone and they put a computer on it and said I had 3 bad Oxygen Sensors on it so I replaced those 3 and that helped my Engine Light to shut off. Then it came back on like 2 times after i ran it. I took it back to AutoZone and they said the left side has a bad circuit so what should I do for that? Plus I still have my HARD very HARD idle which is killing my gas milage. Please help if u have had this problem before with the idle or bad circuits. Thanks to anyone who helps me out, i have been fighting this for almost 2months now. Anything can help!!!</P>


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Old 09-30-2003, 09:28 PM
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mdvaldosta
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Default Fast Idle and O2 Sensors 95 St

Try resetting your computer by unhooking the battery for 15 minutes. See if that fixes it.
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Old 09-30-2003, 10:40 PM
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dougc
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Default Fast Idle and O2 Sensors 95 St



I had them reset the computer at AutoZone and I did what you said also and it still didnt make a difference.</P>


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