thank you all for your help, it turned out to be a bad crank sensor. the old one was bad, and the new one i got off ebay was bad too. i put in a new one from pep boys and that one worked. anyone need an ecu? thanks

 

i hate when there are no resolutions to this. Same issues here, Anyone with ideas? I have a 95 2500 and tried all the normal tests about volts & OHMS to make sure circuits were good and resistance was within range. Are these computers that delicate that they can fry?

 

Read the post right above yours.... his problem turned out to be a bad crank sensor.

 

Thanks. I must have missed that post. Maybe I will start there although I just replaced mine 2 years ago. Can they go bad that fast and intermittent?

This problem happened a month ago and then just started out of no where a day later while doing nothing.

 

Did you put in a genuine mopar part? or aftermarket?? Seems these trucks really don't care for the aftermarket pieces.