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My guess would be that someone locked the tune.

Here's the tsb number your looking for 18-004-04 that will list the ecm numbers.

Master Engine Tuner website has a good video on idle tuning. It addresses idle hang as well.

that's too bad. I was just going to pull them for the depository. Have had several 17's in the shop last two weeks.

Yes pull ficm relay

Here's a stock 03

I usually stay within the max values.

Can anyone tell me what is the pcm in the 2017 F series 6.7?

I think its the cummins ecm that is unstable, I had to quit doing oem flashing on them because they were so hit and miss. about 1 in 5 would accept a flash without something going wrong.

I would look for a shop other than a dealer that has a factory dodge scan tool. Most shops will charge an hour labor plus the cost of the download to reflash a pcm. In my area thats usually less than...

Support contacted correctly, I hope.

When i do the swap i use OEM software to flash it to stock. @ www.acdelcotds.com you can rent oem software for 2 days at a time but you need a j2534 flash tool( not sure if hp is compatible for this)...

As long as the part numbers on the ecm are the same you can swap between them. I have done this several times just using a stock reflash to a v8.

Almost every cummins swap I've been involved with went manual so yeah add it in HP.

Was the truck flashed with the new vin and antitheft relearn after the used ecm was installed?

Thanks for the additional information. Your correct in that i wouldn't zero anything out unless it has been removed.

When i do stock reflashes on dodge pcms there are 2 steps after you complete the flash. 1 is to write the vin to the pcm with a scan tool. 2 is to do an anti theft relearn. As of current I haven't...

Have you tried a running compression test when the misfire is most noticeable?

Awesome, that's what i need to know. So all my adjustments should be in mode 0. Wonder if if some deletes could be done by preventing these modes to keep codes from setting?

I think you may be on the right path with a bad injector. The problem is you have to much air or not enough fuel on bank2. If the injectors were too small or you had a vacuum leak you would see that...

What are the 4 different engine modes that i see in a 2015 6.7 ? or what are the parameters that set each mode. I see that there is a change in pilot, main and post injection for each. The reason i...

OEM spec allows for a variation of up to 10% in fuel trim

If i saw this car in the shop i would call it in spec and send it down the road. I have always been told +or- 10% is allowable.

That was a great write up with lots of well explained information. Thanks for pointing me that direction

Saw that one in the repository. Was kinda surprised to only see 1 v6 listed. It has volant cai and magnaflow cat back.