My IAC was bad so I replaced with an old one i had out of an escort. After i replaced it and readjusted the idle the gas pedal started sticking. Its not sticking as in accelerating but its sticking closed. My mustang has a 5 speed with a 4.10 rearend so to give it a bunch of gas to get the pedal unstuck every time i shift gears isnt all that confortable. I already took off the air intake tube and cleaned the throttle body and it didnt do anything. i sprayed the springs and all the linkages with WD40 still didnt do anything. Any ideas?