Hi again everyone ,i am sure you have heard this amillion times but here goes anyway.My 1988 f-150 5.0 auto has a sticky idle problem when its warm and i stop at a light the idle will stick at at about 1000rpm, when i snap the throttle it drops to 750.I took off the throttle body off and did a deep clean no help . no codes either, any ideas would be great.

 

Try to get some oil/wd40 down the throttle cable sheath.