i posted a problem i was having a while back but didnt post other symptoms. the truck will shutdown at any speed . when i say shutdown i dont mean die because the engine is still running at idle speed. the wait to start light comes on and the check engine light will come on and go off real quick. i can let off the pedal and get back on it and it will be fine. other times it will do it several times in a row. i noticed last night when it did it the lights dimmed and the voltage needle went real low and stayed that way for a couple of minutes. ford place says no codes. the truck has 223,??? miles. i think its got a few more. please help. thanks

 

Check the CPS, Cam Position Sensor. When was it last replaced? What year is your truck?

 

the truck is a '95. changed cps about 3 weeks ago. didnt help.

 

Sounds like a wiring problem like a bad ground or something. Does it do it on roughroads and bumps?

 

I think maybe, batteries, or possibly grounding out as said before. I bet the glow plugs are cycling and the batteries are dying.

Fire Rooster

 

Yes or a failing alternator too.

 

Good call Kwik, that one passed over my mind.

 

definately electrical. i would check grounds and batteries, could be voltage regulator also