I would try this. I would look at the specific wiring schematic for your interior cluster power or ground. I would head back to the fuse panel(interior) or the Body control Module, and see if the side of the fused cluster, that feeds that section of the fuse box, heads anywhere to an intersection where the PCM gets any feed. And also follow the ground circuit to see if there is any other point of intersection that could be interupting the BCM or PCM ground, power in a common area. This seems to be a wiring intermittant open in either circuit or splice area.
I think the truck deserves a Dodge scan and their schematic sheets(readily available) experience, and possibly any inside parts or service information. Ok
The in tank low pressure pump may be having communication problems with it's relay ground source(PCM).
Wrap the hose for the in-tank pressure guage through the back of the hood under your wiper blade(careful) to see if you lose pressure and power a few seconds later or less. If the OBDII is not emmissions related their(Chryslers) codes show up on the DRBIII. A big time 6 grand computer. Also if you can find the problem with it shutting off, a second problem may exist now or soon, if it is wiring and not a PCM or input sensor problem. Ok joe
Monday, October 12th, 2009 AT 11:57 PM