jtpfarm

I found the vmac1 book online. Thanks for the offer though. Update, I changed the engine shutdown relay and it has yet to shut down on me since. I find it very hard to believe that was the issue as the previous owner spent a lot of time and money trying to solve this problem. BUT, it was the original relay. We started harvest now so the truck will be getting used daily. I'll keep updating.

I'm definitely leaving replacing them until a last resort. I now have the flowchart for 6-2 and 6-3 code, but the tests are basically impossible to perform when it's such an irratic short term problem. A couple other things I have noticed. 1: I am not able to reset/save the idle speed with the cruise switch like described in the tech manual. It idles at 625 and when I flip the switch 3 times it doesn't do anything. 2: Compared to our 98 with a 427, it idles much rougher. Cab slightly wiggles back and forth while idling. We did put stage 2 injectors and a bigger turbo on but I don't see how that would effect the idle. Not sure if these are related to my issue or just the way this truck is.

Do you know anyplace that sells used/refurbished/repairs the FICM if that ends up being the issue? It's my understanding that the VMAC computer has to match the truck Vin and can't be flashed. Is that true?

I've been trying all day to duplicate the problem after having it occur every time we have driven in the past. I've grabbed and pulled/wiggled every wire I can reach.

I swapped the relay and it's maybe not quite as warm. Wiggled and moved everything I can find with no luck replicating the issue. Going to hook a small light to that fuse to see it shuts off next time.

Update, I have discovered if I pull fuse 32 which sends power to the fuel actuator through the shutdown relay, I get a shutdown with the same code. Also noticed the shutdown relay gets very warm. Any ideas?

You mean the big round relay/solenoid in the glove box? That is new.

No other functions lost that I noticed. And so far it will ONLY occur after coming to an idle after any sort of acceleration. For instance, tonight I drove it 3 miles, came in the yard and about 10 seconds after I put it in reverse it died. The other day I started it, drove 500', opened the door and it died before I got to the ground. The truck only has 185,000 original miles on it. I have not inspected the FICM, where is it and what is there to look for?

Apparently this is a fairly common problem that no one has posted the answer to. Lol. Looks like it's a vmac 1.

It's definitely not a fuel issue. If sits 30 seconds or so it starts right up. (Not crank for 30 seconds) It looks like the code is date line input no signal. I am told this is a Vmac 1 (I know it's not a 3) I only get electronic malfunction, no engine shutdown light when the problem happens.

I have a 96 CH613 with an E7-350. I have been having an engine shutdown problem. So far only while idling. It will die like the key is shut off with electronic malfunction light. It's giving me code 6-2. (I've read other topics with this problem but have never seen a solution) Grounds have been cleaned and plug by the pump checked. It generally takes 30 seconds before it will restart. Does anyone have any ideas? Thanks.