I was driving to work this morning and my truck went dead while going 30ish mph. I tried to start it, but it would just turn over and not run. I sat for around 20 minutes or so and the thing started right up like there was never a problem. There was no warning or anything and it was not running rough prior to stalling out......strange. I was pulling a 6'x12' trailer so it was a little scary loosing the power brakes. I decided to just turn around and bring the truck back to the house since it was running once again. Any thoughts on this? Thanks for any and all replies.

 

Hot stall , restart after cooling sounds alot like IRP solenoid .

 

Also could be the Cam Position Sensor (CPS). I've had a couple go bad on me. The truck is running fine then the engine stalls for no reason and the Service Engine Soon light comes on. Turn the truck off and wait a minute or so and the truck starts up fine and runs like nothing was ever wrong and there's no Service Engine Soon light on.

 

I'd look at the IPR, they do that when they go bad. Check to see that the tinnerman nut is still on it and cool it with water or spray air next time and see if it clears right up, if it does you have a bad IPR solenoid.

 

The CPS does the exact same thing and is a quick & easy & cheap change-out.

 

Quckest way to rule out IPR is douce it with cold water / ice when it does it. If it starts immediately thereafter, it's most likely the IPR.

 

If the Tach moves while cranking, the CMK is good. If you have a guageset installed that monitors that particular PID, even better.