Newbie here and hope someone could give me some help.
95 F250 5.0L Manual Transmission 210,000 miles.
The truck cranks and idles fine while driving until i hit fourth and five gears and then starts to idle rough and struggles worse going uphill.
I have replaced the TPS and AIC. MAP checks good. I have also replaced three broken exhaust bolts. I have replaced vaccum lines also and continue to look for leaks but nothing yet. Am i in the right ballpark here or is there somewhere else i need t0 be looking.
Thanks for any and all replies.

 

Ford Fuel Injection » How To Run a Self-Test

I sincerely hope you checked for codes before replacing those parts.

 

^^^^X2^^^^

 

Code 111 with key on engine off
Code 411 with engine running, only code i received.
The replacement of the TPS and AIC was from previous readings. Now all i get is the 411.

 

Next set of questions: When was the last time you did a tuneup with new cap/rotor/plugs/wires and filters? What is the fuel pressure at idle and with the vacuum line pulled off the FPR?

DTC 411 indicates that during Engine Running Self-Test, engine rpm could not be controlled within the Self-Test lower limit band.

Possible causes:

-- Improper idle air flow set.

-- Vacuum leaks.

-- Throttle linkage binding.

-- Throttle plates open.

-- Improper ignition timing (Distributor Ignition vehicles only).

-- IAC solenoid contamination.

-- IAC circuit short to ground.

-- Damaged IAC solenoid.