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post #1 of 5 (permalink) Old 05-31-10, 01:42 PM Thread Starter
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Question 1992 F150 Reving problems 5ltr Standard

Please help!! We have tried everything!!

Engine continues to rev when shifting gears. If you snap the gas peddle quickly the engine will kick down to an idle.

Have already replaced throttle positioning sensor, Idle air control valve.

Any help would be greatly appreciated.

John


Last edited by jwko; 05-31-10 at 07:32 PM.
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post #2 of 5 (permalink) Old 05-31-10, 04:53 PM
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Re: 1992 F150 5 litre Standard

Can you make it do that setting still? Does the throttle move easily and the springs are intact?

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post #3 of 5 (permalink) Old 05-31-10, 06:34 PM Thread Starter
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Re: 1992 F150 5 litre Standard

Yes it will do that sitting still, yes the throttle moves easily and springs are in tact.

throttle returns fully but still maintains a high rpm.

Any suggestions

thanks

99mallard



Quote:
Originally Posted by rtg143 View Post
Can you make it do that setting still? Does the throttle move easily and the springs are intact?
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post #4 of 5 (permalink) Old 05-31-10, 08:11 PM
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Re: 1992 F150 5 litre Standard

Unplug the IAC while it's idling and then throttle it up to see if it come down.

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post #5 of 5 (permalink) Old 05-31-10, 08:16 PM
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Re: 1992 F150 5 litre Standard

Try this too and see if you come up with anything. Ford Fuel Injection Ľ How To Run a Self-Test

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