Hey Scotty ! I have a 1997 ford ranger with a 2.3l engine with a manual transmission. One day it started idling very bad so replaced the idle air control valve, throttle position sensor, cleaned mass air flow sensor throttle body and pcv valve. I also did the relearn process multiple times Now my throttle sticks in between shifts and in gear so I’m fighting to stop sometimes. The idle is fixed but now it’s sticking and the petal Dosent seem to stick. also seems to start very high then goes back down.
Check if you put the "throttle position sensor" in its original position {black}:eat:
@ismile please copy + paste your response as ‘Your Answer’ below, thanks.
Sounds like it's either getting unmetered air or the computer isn't controlling the new IAC valve correctly.
Maybe try letting the truck warm up to operating temperature and while it's running unplug the IAC Valve wiring connector.
That will cause the IAC valve to close and the rpms should drop and the truck should start to stumble and probably stall.
If that doesn't happen then there's a good chance that the computer has already commanded the IAC valve CLOSED (so unplugging it won't make any difference) and you're idling on air from a vacuum leak which could explain why your rpms aren't dropping down fast enough when you take your foot off of the gas pedal and the throttle plate snaps shut at high rpms.
