I have a 95 automatic 351cid im getting error codes 23 & 38 truck has a rough idle and is hessitant on acceleration kind of feels like running on 7 cyl. Code 23 is TPS code 38 Idle tracking switch

 

erichampton,

Welcome to FTE and the Big Bronco Forum. We will endeavor to get you the most accurate information we can muster.

The ITS is part and parcel to the IAC. Though I have never personally seen this code manifest itself on a Bronco, the issue stems from faulty IAC readings or movement. The suggestion would be to either clean or replace the IAC (Idle Air Control) solenoid/valve assembly. Cleaning is less expensive and often cures the problem. This combined with TP sensor fault codes would concern me as to whether the throttle plate stop screw has been messed with. Hopefully it has not and cleaning the IAC and replacing the TP sensor will rectify the problem.

 

Where can I find the IAC? I appreciate the feed back. I also cleared the code cleaned the TPS and re ran the code check came back with 33 EGR with 114K Carbon is going to be a pain

 

The IAC is mounted to the driver's side of the throttle body. Should be a photo of it in my gallery "under the truck" or the "parts explosions" section.