08 Prostar Electrical problems again!

I was coming back from Reno a week ago last Saturday, and the ABS, Triangle, Trac Control, Trailer ABS lights all came on, then the buzzer went off, and all the gauges zero'ed out, including speedo and tach. Display said ABS Module, then changed to Electrical fault, the went to warn engine. After a couple seconds everything came back on like nothing was wrong. It did this off and on all the way to Boise. Went to IH dealer, they plugged in the computer, and the tech looked at all in inactive codes, as all the lights were out. He said he thought it was the ABS module, but wasn't 100% sure, and wanted me t bring it back on Monday. I can back Monday morning, dropped off the truck and went with my wife. Dealer called me late in the afternoon, saying that the ECM was bad, according to Cummins, some computer program from Cummins anyway. So they replaced the ECM, and I picked the truck up Tuesday afternoon. I didn't even get out of the lot, and it did it again, exact same thing. They pulled it back into the shop, and the tech found a lose ground stud on the starter, or so they say. Fixed that then I drove it for about 30 miles with no lights or buzzers. I went to where I park, came back Thursday to go load, and it did the same thing again, so back to the shop. That is where it still is. The tech that is working on it now, still hasn't found the problem. He did find a corroded terminal in a connector on the harness that runs around the back of the engine, but that is all he has found. Anyone have this same problem?, and what was the fix for it? In November, they replaced the body controller, and in Feb., the right front ABS sensor wire came lose and got rubbed on the wheel until it was almost apart. So far, I've lost 4 loads going outbound and 4 loads coming back. I need to have my truck back, as it is set up for what I haul, and a rental just won't do what I need. Any one have ideas?

 

Thanks for the tips. I'll pass them along in the morning. Your a great asset to this forum! Thanks again. EdG

 

I talked to the service manager this morning, and relayed all the info from Heavyd to him. They seem to think they have found the problem. The tech thinks, 99% certain, that the problem is in the Vorad system. The sensor on the underside of the front bumper, which according to him is hooked to the datalink as well. He did something to disable it, and is out test driving it now. If that is truely the problem, I told the service manager to have him completely remove it from the programming, if possible anyway. If not, I'll have to spend more money on the new sensor. Anyone have any thoughts if that will solve the problem?

 

I told them to remove the program or whatever it is from the computer, they are saying the forward looking unit is bad, and it's around 1k for the unit. I don't get a discount on my insurance for having the Vorad system, so I'm not going to spend the money on repairing it. Thanks again for your insight, this electronic stuff is a pain, but having someone with your knowledge around to give us advise is very helpful. Ed G