balesray

Don't know if anyone wants to know just how much was spent, not counting my time, on this project but could possible save some time and expense so here goes. I took the route of do the easiest and cheapest first. Fuel Filter ($13.46), Fuel pump ($98.68), APPS which was returned and restock fee was $9.80 plus $3.02 shipping, ECM also returned after restock fee of $167.25 plus $12.00 shipping, VP44 cost and used $975. Truck had a code of P1689 and the trouble was that VP44 and nothing else. I thank everyone for their help and could not have done this without it. THANKS Also bought a code reader (Bosch) that cost $109. Anyone want to kick in and help pay for all these mistakes????

Any idea the ratio of oil to fuel???

Read somewhere that oil should be added to this new diesel fuel. Any info on this and if so what kind of oil should be used.

GUESS WHAT!!!! Charged the batteries a couple hours each disconnected, hooked them back, engine cranked over half dozen time and kicked right off. GUESS AGAIN!!!! Truck is now running like it should so problem was the VP44 and thank goodness. Think I'll get a job working on diesel trucks now. Thanks ever so much for the info you and everyone else has provided cause I really needed it..

Trying to bleed the air out of the lines now. Which one's and how many need to be bleed. Batteries ran down so on charge cycle now. Anything special that need to be done beside bleed the air?

Don't know anyone that even owns a diesel truck. Live out in the sticks and don't get around much. Especially now that that dumb truck is giving me a fit. Thanks for the help.

Replaced VP44 but have not gotten the truck running yet. A difficult job for an old coot.

anyone know where I can purchase the PSG in the VP44. Took that sucker out of the truck today and boy was that a pain in the everywhere.

If the MAP sensor output voltage reads 5 Volts DC which is the same as the input voltage would indicate that this sensor output is shorted to the input. What effect will this have on how the truck will runs??? Would like to know.

What are the symptoms if the map sensor quits working properly. Does this have any effect on the operation of the engine. Thanks for replying again. One of the pins going to the APPS is labeled "low idle select". Does anyone know what that signal is and what it is for?????

Explain in more detail about wire to wire short please.

Is that what is called PSG on the VP44 and can it be repaired. Noticed there is a place in England that says they repair the PSG5 in the VP44. Just wondering if this is possible and if there is any place in the states that does this? Thanks

Thanks for the info. put a new apps on & reset - no change. Lift Pump and filter - no change, ECM - no change, less than .03 v on alternator, code still P1689.

ECM not the problem. Truck still performs exactly the same with new ECM so what to do next??? I have a couple of questions hope someone can help with. 1. How many inputs are connected to the ECM ? 2. If any of these inputs are defective what will be the trouble that shows there is a problem? 3. Will any of these inputs cause the ECM to not function correctly? 4. Wiring diagram shows an electrical connection between the ECM and PCM on these trucks. What is that for? 5. Someone said to much ripple on the dc voltage coming from the alternator can ruin the ECM. If so what is the results?6. 6. What should be the maximum voltage coming from the alternator? That is a start. More to come & hope not creating a problem for anyone.

Ordered an ECM today. Hope it fixes the problem.