This truck has been at a garage for 4 months, its been torn apart, scattered and ignored, you get the idea. The garage said they couldn't get the codes and they didnt know what was wrong with it, I finally got it home and kinda got it togeather. When I took it to the garage it would idle, but not much more, now it wont even start......

Last night I finally got the codes off my truck, there are 12 of them as follows:

P0121- tps voltage does not agree with map
P0122- throttle pos sens volt low
P0243- turbo boost limit exceeded
P0236- map sensor too high too long
P0351- fuel inj pump fuel valve feedback circ
P0252- fuel inj pump fuel valve stuck
P0253- fuel inj pump fuel valve open circ
P0380- glow plug circuit perf
P0382- intake air heater relay no2 ctrl circ
P1688- Internal fuel inj pump cont failure
P1689- no comm between ecm and inj pump mod
P1698- no ccd/j1850 msg from tcm/pcm
( I got the DTC codes from edgeproducts.com)

Id hazzad a guess that my VP44 is toast, but today I changed the battery cuz the one was dead, and I figured I'd clear the codes and read them again, just for fun....Any way my OBD2 now says "Link Error" and my odometer is saying "no bus"

If I turn the key on just enought for the trouble lights to come on they will all come on, then they all go out, then the odometer flashes 4X and the odometer reads "no bus" then the check engine light comes on.

I checked that one big plug in the fuse box under the hood on the drivers side and the bolt in it wont tighten down all the way, almost like its stipped out, and it has a little bit of play in the plug, but not a ton.

I also found what I think is a ground wire, its black and comes kinda off of the lip of the cowl more towards the passanger side of the truck, but im not sure where the other end should attach, it looks like it should go to the one bolt on the pcm but im not sure.

The lift pump cycles, im getting fuel to the injector pump and up to the injectors, the motor will turn over good but, but hasnt started.

Any help at all, any suggestions, esp how to get rid of the "no bus" code would be really appreciated, at least with the no bus code gone I could read the OBD codes.

 

youve got quite a pickle there. i wouldnt say its the vp. i would reckon electrical issues at this point. lets work this thing

 

Any suggestions at this point would be helpful. And Im sorry Im not completely usto working on diesels so could you try to keep it kinda generic

 

any way you could get ahold of a another ecm...like outta a buddies truck? map sensor could be bad i guess...get out the old multimeter and start checkin voltages.

 

I thought about borrowing another ecm, but if theres sumpthing in my truck that fried mine I dont wanna fry another one, hell im broke as it is i dont wanna buy 2 ecms.

 

welllllllllll

 

I would go to a junk yard to find an ecm or check ebay.

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