have 97 6.5 dually stopped will not start. had this problem 2 weeks before plulled intake plugged in pmd to pump and started. than tryed harness started put new ext and pmd put back together worked fine except seemed hard to start when hot . left truck idling 5 minutes it shut off and will not start any ideas

 

Is the remote mount PMD fastened to an aluminum heatsink with heat transfer paste/pad between them?

Where did you mount the remote PMD?

Is there a PMD resistor in the remote PMD connector cavity?

Is the IP/PMD harness ground still fastened under a screw on top of the IP-it MUST stay fastened to the IP!

Are there any trouble codes?

Have you checked for fuel at an injector while cranking?

Does the fuel shut off solenoid click when the key is first turned to run-might need a helper to check that?

Any smoke from the exhaust while cranking?

All fuses good?

Have you tried plugging the remote PMD into the factory IP harness without the extension-some extension harness are problems.

 

3 coded po236 po 370 po 251

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pmd mounted in bumper on heat sink. resister in/ never checked at inj. but no smoke . never checked fuel shut off. checked both ecm fuses. good. thanks

 

P0236 Turbocharger Boost System
P0251 Injection Pump Cam System
P0370 Timing Reference High Resolution

IP turning?
Have heard of the keyway getting sheared in the IP drive flange-pull the oil fill off the cover and have a look to see if you can prove the IP is working?

 

I pulled intake pluged in pmd and started. pluged in old pmd and ext harness started... no the question is why does it work no mater what you do.

 

Lot's of bad PMD's will work cold but not hot.

Also a worn out IP will have a hard or no start hot because the starter can't turn the engine over fast enough to make enough fuel pressure to open the injectors when the fuel is hot and thinned out,it leaks past the plungers in the IP.