Outstanding!!

Not sure how you know or don’t know it’s running even on all 4 cylinders, please explain what testing has been done to support this, I suggest again adding a timing sync to your WF, would also be able to rule out timing by checking a a correlation of the cmp and ckp .

That’s interesting, Mack does not use a temp sensor all temp input is from ambient and def sender, in the CNH product I have found that depending on machine model (likely due to origin of design and manufacturing) I have found info indicating some use an internal temp while other do not… imagine how...

RYM6746, no expert myself, from what I think I know, you are looking at an exh valve leak on the cylinder you were testing.. Possibly you have a timing issue, since you indicate no timing codes, no mechanical timing issue that you've found and your MAF code indicates a air flow problem. Post compres...

cant say I know anything about the particular model in question I can tell you that in heavy trucks there is a strategy called low NOx idle, in the past it caused many issues with techs trying to diagnose an issue that was not an issue but rather a strategy by the OE for NOx reduction during low coo...

Spent some time this weekend investigating a P0304 on a 1996 Toyota 4Runner 3.4L Fairly constant misfire, in all rpm ranges, used scan tool to check misfire counts, cyls 1-3 had none and cyls 5-6 would accumulate some while cyl 4 was going crazy Hooked scope up Channel 1 on cyl 4 secondary Kv Channe...

Was digging through the archives on UDS, attached some training info I had..

Helolo Ben, Great post, in regards to the strange waveform capture.. This is only a guess based on experience, the system once primed needs to keep pressure in the lines between pump and injector, the Denox pump utilizes a diaphragm pump, with this type pump (from my understanding) there is no mecha...

Customer concern about during road operation the max mph would surge as would engine load, observed symptoms were loping road speed (25 down to 18)mph on flat and slight declines less than ~5%, and engine load on machine display would vary from 0% to 85%. In checking with our tech specialist for the...

Wanted to update the post with the resolution… New pump was replaced in error, incorrect test procedure, final fix was a bolt torque being to high on a certain area of the valve, all bolts torqued to 66ftlbs with the exception of one that resides near the main regulation piston which affects the flo...