I have a 93 f150 with the 302 and 4 speed. When driving or justed park the idle takes along time to come down to 700 rpm if it does at all. Sometimes to get it to go back to 700 rpm i have to tap the throttle several times. When driving and I press the clutch the rpms never drop until it goes into gear. Any solutions as to what could be the problem. Thanks in advance.
Air leak on the intake side maybe? Check your return spring. The throttle cable could have a slight stick to it. Just check all moving parts to do with the throttle, if you find nothing, then its time to see if you have a leak somewhere.