It cranks and won't start. Dealer says it needs a computer. My EFI Live says there is fuel pressure, 185 cranking RPM, and readings from what sensors I can figure out. Just got the program, haven't been able to use it on a running vehicle yet. Thought about downloading a tune and reflashing it. Has fuel, all the basic stuff. Checked the connections I could find. Don't know now. I had thought about taking the computer out of the other one, but the dealer said it has the same problem. The VIN's are only 12 apart. Haven't hooked EFI up to it yet. Missing a couple of parts.

 

well u probably will have to get ahold of a new ecm somewhere. cranking pressure should be about 50mpa i think

you can try re-flashing it i have a few stock lly tunes on my computer. Theres so many lttle things tan be checked, but i dunno if you want to put the time and effort into it.

i noticed that its not actuating injectors, did they say what computer u need an ECM or FICM?

 

They didn't say. I really think they didn't know either. The mechanic that told me wasn't a diesel mechanic, and I was having to correct him on how this was not a 6.5 mechanical.

I have nothing but time, and really want to learn this EFI Live stuff. All I have been able to find on it is advice from gassers, and they can't tell me a lot about how the Duramax tables are supposed to read. I would really like to know how to tell what a bad ECM reads like.

 

well hook up ur efi live and open up the tune tool and download the tune thats in the ecm for first. its the green arrow

 

Ok. try to get that done today or tomorrow.

 

well i aint doing much all day so u can gimmie a call or somethin