I just replaced my throttle position sensor and now my truck idles at 1500rpm in after start up,but when i put it in gear the idles goes right back down to 700rpm and idles at stop lights fine and when returning from a drive it idles fine when put back in park,this only happens on start up
SOURCE: automatic gearshift stuck in park
The release for the shifter is tied to the brake lites, check to see if the brake lights work, if they don't then test the brake light switch at the top of the brake pedal, if it lights a test lite when you press the brake it is ok, in that case you need to check the little solenoid that pulls the cable to unlock the shifter, it is bolted to the top of the steering column, in order to get at it you will have to unbolt the column and drop it dow.
SOURCE: Throttle position sensor
yep it sounds like its going bad. I cross referenced the web site you gave to a Ford Parts Catalog and this is your part:
STANDARD MOTOR PRODUCTS Part # TH157T
SOURCE: Extremely high idle speeds develped overnight
check idle speed control make your throttle valves not stuck.check for vacuum leak around the throttle body area look for broke gasket.
SOURCE: when I am in park or come to a complete stop at a
see if catalyc converter is clogged it will make a car idle and run bad
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