Engine/Transmission (1998.5 - 2002) Truck runs good and dies with no warning

[AllenPoole]

The truck was runing great and just stalled out after about 1 hour it started back up like it was fine. Check engine light came on turn the switch on and off to get the codes. #1 is PCU 1693 #2 is ECU 1689 #3 is PO234 If anybody knows these codes or can offer any info will be great. Thanks... 2001 Doge Ram 3500

 

[FourBarR]

p-1689 no communication between ecm andinjection.

p-0234 turbo boost limit exceeded. p-1693 is a code set saying there is a code in the ecm or pcm.

 

[FourBarR]

sorry left of of p-1689 injection pump module. should read my post before pushing the button.

 

[AllenPoole]

Thanks for the info FourbarR . Been doing some online research and got some info. Got home today and tried to start the truck and all it did was crank I loosend the banjo fitting and turned on the switch and it only dribbled so I loosend 2 injector lines and it started right up. drove it about 8 or 10 miles and it ran fine. shut it off at home and a few minutes later it started back up. So im wondering if I should replace the fuel system from tank to engine I plow snow with the truck and salt has eaten brake lines so im wondering if its eating something in the fuel system

 

[Bob4x4]

1689 points me to the injection pump

 

[Sticks]

No communication between the ECM and VP44... Could be pump, ECM, or a wire harness issue.

Any performance boxes or programmers installed on your truck?

I have had that code show up a couple of times and it points back to my Edge Comp. I disconnect, reconnect and all is good for a year or two.

 

[JMetzger]

I had the code 1689 about 4 or 5 times & I thought it was VP. Once code was cleared truck would start & run great until next time. Took truck to Dynamic Diesel In Reno, NV about 6 or 7 months ago & they disconnected connectors at ECM, PCM, VP & Banks cleaned & reinstalled & the code has not reappeared since (knock on wood). The tech said that they are finding that if the connectors are not squeaky clean you can get the 1689 code & they are finding this as the trucks gets more age on them. He said that the 1688 is the code of death & truck will not start until VP is replaced but 1689 is communication between ECM & VP which can be dirty connections which appeared to have been my problem.

 

[AllenPoole]

Thanks for the responces I havent had time to look at these areas. I did just order a Air dog & a programer so i will check on every thing else. I plow snow & have a salt box on the back & the salt spray does get over the whole truck riding the roads. Thank Again