throttle sticks at about 1100 rpms on 1991 Ford F-150

The throttle sticks at about 1100rmps at idle. If I tap the top of the throttle body it drops down to 750 to 800 rpms. I have changed out the TPS and the Idle control valve. How can I be sure that I put the Throttle position sensor correctly?

by in Sacramento, CA on March 02, 2010
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1 answer 3 comments
ANSWER by , March 02, 2010
Here's some info from a ford forum and it sounds like debris might have gotten onto your IAC and it needs to be cleaned here's the forum Hope this helps
COMMENT by , March 02, 2010
Thanks for the recommendations. It is raining here so I will have to try cleaning the idle control valve when it stops raining. Does anyone know how to replace the throttle position sensor correctly? Jack
COMMENT by , March 02, 2010
Jack Ask your question again about the throttle position sensor because it needs to show up on the header
COMMENT by , July 04, 2010
on the left side wait till engine is cold there is a semi round sensor near the throttle body with 2 torx heads t20 remove them gently. replace tps and start the screw even more gently the tps only goes on one way.plug back in and set idle to 1000 rpm