I have a 95 f 150 4x4 5.0 with an AODE trans. It started shifting weard when floor boarded it takes off but when slowly given gas it shutters and acts funny. The check engine light is on and the code reader said DTC 90. 111. 123 and 171 and I don't have a clue where to start. So any help is good help. Thanks.

 

I can not find a 90. The 111 means the system has passed the self test. The 123 is for throttle position voltage too high. 171 is O2 sensor at adaptive limits and not switching. I would start with the throttle position sensor code first.

 

I replaced the throtle pos sensor the check engine light is now only comming on once in a while. It seams to run the same and I don't know what to do next.