Search found 69 matches

by muttnjeff
Thu Jul 07, 2022 2:29 am
Forum: Heavy Duty and Off Highway
Topic: Off Highway Kit
Replies: 1
Views: 271

Re: Off Highway Kit

Outstanding!!
by muttnjeff
Thu Feb 24, 2022 3:28 am
Forum: Diagnostic discussion
Topic: Diesel In cylinder pressure HELP
Replies: 6
Views: 2749

Re: Diesel In cylinder pressure HELP

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 .
by muttnjeff
Tue Feb 22, 2022 11:40 pm
Forum: Heavy Duty and Off Highway
Topic: Bosch Denoxtronic 2.2
Replies: 15
Views: 9616

Re: Bosch Denoxtronic 2.2

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...
by muttnjeff
Tue Feb 22, 2022 6:43 pm
Forum: Diagnostic discussion
Topic: Diesel In cylinder pressure HELP
Replies: 6
Views: 2749

Re: Diesel In cylinder pressure HELP

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...
by muttnjeff
Tue Feb 15, 2022 12:47 am
Forum: Help me fix my car
Topic: Injector Waveform: Ford Mondeo MK3 1.8 Duratec HE 2006
Replies: 5
Views: 2835

Re: Injector Waveform: Ford Mondeo MK3 1.8 Duratec HE 2006

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...
by muttnjeff
Mon Feb 14, 2022 4:35 pm
Forum: Diagnostic discussion
Topic: One waveform One picture
Replies: 38
Views: 26181

Re: One waveform One picture

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...
by muttnjeff
Fri Feb 04, 2022 4:03 pm
Forum: Heavy Duty and Off Highway
Topic: Bosch Denoxtronic 2.2
Replies: 15
Views: 9616

Re: Bosch Denoxtronic 2.2

Was digging through the archives on UDS, attached some training info I had..
by muttnjeff
Wed Jan 26, 2022 4:11 pm
Forum: Heavy Duty and Off Highway
Topic: Bosch Denoxtronic 2.2
Replies: 15
Views: 9616

Re: Bosch Denoxtronic 2.2

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...
by muttnjeff
Wed Nov 03, 2021 1:17 am
Forum: Heavy Duty and Off Highway
Topic: New Holland CR 8.9 Combine
Replies: 1
Views: 3106

New Holland CR 8.9 Combine

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...
by muttnjeff
Sun Aug 01, 2021 2:59 pm
Forum: Heavy Duty and Off Highway
Topic: Workmaster 105 No Fwd or Rev
Replies: 3
Views: 5628

Re: Workmaster 105 No Fwd or Rev

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...