07 dodge 6.7 cranks but doesn't start
 

I have an 07 with 6.7 cummins. It has erg/dp/cat deletes running stock tune using xrt pro tuner. It has 5in turbo back exhaust with muffler only. Also has an auto start/alarm installed.

Yesterday I changed the oil/filter, drove my daughter to work (about 8 miles). When i went to pick her up, I started the truck (with the key), backed out of my parking spot and it died. I tried restarting it, it seemed to fire for a second, then died again. same thing but seems to fire less to now almost none. I tried pulling codes with the reader I have, but it showed none. It was running normally up until that point.

My first steps today will be checking battery cables/connection and hopefully load test them, and try a better code reader. Any suggestions would be appreciated.

Both batteries were weak but not the problem. Its now in the shop for the last 2 weeks and they cant seem to figure it out either, He said the fuel pressures are right and engine controls all tested as they should. He flashed the ECM back to stock to run more tests... was checing the proper operations of the vavles and it its not that he said he beleives its the ECM. Hope to know for sure tomorrow

Ok.. trucks been down for 3 months.. The first shop was telling me it was valves or rings, then all the sudden it started and ran perfect.. they test drove it for a while and I came and picked it up. I paid them for troubleshooting, 2 new batteries and #2 fuel injector. The next day it did the exact same thing.
I took it to the dodge dealer, the tested and tested, said it was the CP3 pump (replaced it) then they are telling me it was all 6 injectors are bad (including the one the first place changed). I had them change the cam and crank position sensors (no change). They also flashed the ECM (I had reset it to stock prior to giving it to them) and I had the auto-start/alarm removed to rule it out.
Any advice on new places to look?

When the ECM was reset did they put the correct injector codes in? Ive seen issues similar to this because of the injector codes being incorrect or even missing during a reflash.

I hadnt thought of that.. Might explain them failing the injector tests.

Ill see if I can get the codes they entered from Dodge. Is there another way to get what is currently set? If they did something wrong they might not admit it.

They should have saved the injector info before the flash and then flashed it back into the ECM. Basically if they are incorrect and the dealership did not know them you have to take the valve cover off and get the codes off of each injector. I have seen no start conditions come from a re flash like that.

After 7 months 3 shops and at least 8 different mechanics...It looks like they fixed it.

From what he said, the throttle plate was sticking shut.. they popped it free and it started right up and ran like it always had.