87 4.0 renix engine quits

[Ken Seymour]

Got the fuel level sender fixed.

I was testing the truck today and it quit. Tried to restart it and it wouldn't. Had to wait 10 minutes. It finally caught and started and ran fine. The fuel pump was still running so it's not that. Been told it is the crank sensor. I can't find any mention of one in the manuals I have. Another mention was an automatic shutdown relay. Also can't find one of those in my orange book of schematics. 

Anyone run into the same problem? 

[87MJTIM]

The ASD is one of the relays on the passenger side between the batt and firewall.

 

RE: not starting - what does it do (not do)?  Does it crank but not start?  When you turn on the key, but not turn to Start, do you hear the fuel pump turn on?

 

 

[Ken Seymour]

4 hours ago, 87MJTIM said:

The ASD is one of the relays on the passenger side between the batt and firewall.

 

RE: not starting - what does it do (not do)?  Does it crank but not start?  When you turn on the key, but not turn to Start, do you hear the fuel pump turn on?

 

 

The fuel pump is running. I can hear it. The starter is a new Bosch. And the engine turns over. It ran perfectly for 30 minutes. I was moving things on the property and was maneuvering to put it back into my shop. I had just backed up to take another shot at it and it just quit. Like I turned the key. Would not restart immediately. I had to wait more than 5 less 10 minutes then it started. It has happened twice before a few months ago. Haven't run it as I was finishing up the front end. New front frame crossmember, new front header panel and new fenders.