Hello I have a 95 250 xlt 7.5 lt 460 4x4. recently the truck started losing power while driving , I have replaced the coil, wires and plugs , ignition switch , ignition control modular ,air charge temp sensor, fuel filter had a hidden code for air charge temp . ( replaced ) also traced ecu wire harness for any damaged wires found none . But problem is still there used to be able to restart immediately now have to weight 3 to 5 min to start it will just crank over .any advice would be help full running in circles.an suggestions ? thank you for your time .

 

Disconnect the battery ground, disconnect the MAF connector, wait 10 to 15 minutes, reconnect the battery ground, then start the truck and drive it for 10 minutes or so with MAF disconnected and see the difference.
For no start another test you can try is to check coolant level and inspect your ECT sensor (engine coolant temp).

 

Thank you for the advice I will give it a try .

 

For the ECT don't remove the sensor, just the electrical connector, then go thru the procedures shown below. You should also inspect for corrosion sometime it can cause bad reading, you can use sand paper or wire brush then contact cleaner or electronic cleaner to clean.



If you think you need to replace it, the torque spec to tighten is 10-15 ft/lb