My 2001 F350 7.3 dually diesel Automatic has been a pretty good truck but recently it has been dying. Engine just randomly shuts off without warning while Driving. Check engine light comes on sometimes. Some of the time it will restart if I cycle the key. Once its running again I can rev the engine up without a sputter but after a few hundred yards down the road it will die again. I noticed driving on the highway when it does it my truck will buck first, then...
If I leave it in drive with the key in the run position when it dies and I'm coasting down the highway the Tach starts jumping around like its trying to restart itself, all on its own.
I don't have a scanner
Any ideas or need any other info?
Appreciate the help!

Mike

 

Did you ask in the diesel section as well, might get a faster response?

 

Change out your CPS and see if that helps it's an easy fix. Replace it with the one you get at the Ford dealer, aftermarket Crank Position Sensors have been known to be flakey and inconsistent. One way you can tell if the CPS is bad is when it fails and cranks without starting look at your tach. If it doesn't read the rpms the CPS is bad.

 

If not the CPS.... check the connector on the ICP for oil... if there's oil then replace the ICP. BTW... you can disconnect the ICP and it will run... if it doesn't shut off, you'll know it was the ICP. If it does shut down... I'd go back to it being the CPS.

 

Ok guys
Just put new ford "grey" cps on. It had a "black" cps on it
Will take a drive shortly and report back.
I'll try unplugging the ICP just to try that also
I've also ordered the IPR sensor also, should be hear tomorrow

Haven't been too pressed to get running as I have another vehicle/jeep and was waiting for a little warmer weather
Will report back soon
Appreciate all the help guys��
Mike

 

My money is on the CPS. I had the same issue on my truck. I hope its fixed for you.