MikeD Posted March 13, 2017 Share Posted March 13, 2017 Anyone know what PP329 M128 01 04F is? Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/ Share on other sites More sharing options...
Mackpro Posted March 13, 2017 Share Posted March 13, 2017 7th injector bad or harness to it bad Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364402 Share on other sites More sharing options...
Mackpro Posted March 13, 2017 Share Posted March 13, 2017 Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364403 Share on other sites More sharing options...
MikeD Posted March 16, 2017 Author Share Posted March 16, 2017 Thanks. I reset it. It will start a regen. Then seems to almost always stop and throw the code again. However it has regend while sitting on its own a few times this week. Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364735 Share on other sites More sharing options...
MikeD Posted March 16, 2017 Author Share Posted March 16, 2017 (edited) I had to replace flywheel housing and just got back on the road. 7th injector was unplugged. 7th injector fuel line was removed and re-installed. Maybe plug needs some dielectric grease? Any suggestions? Edited March 16, 2017 by MikeD Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364736 Share on other sites More sharing options...
MikeD Posted March 16, 2017 Author Share Posted March 16, 2017 (edited) Coolant was drained. And I'm having a heck of a time getting air to workout. But looks like a wiring issue is likely the cause. Edited March 16, 2017 by MikeD Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364737 Share on other sites More sharing options...
MikeD Posted March 16, 2017 Author Share Posted March 16, 2017 Can I check with a voltmeter? If so do you know procedure? Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364740 Share on other sites More sharing options...
Mackpro Posted March 17, 2017 Share Posted March 17, 2017 Looks like if you unplug the 7th injector you should have .5 to 3 ohms across the 2 wires . Same if you plug the 7th injectors in and check at the bottom plug on the engine ECM on pins 45 and 62. There are no books on troubleshooting these anymore all in the Mack Tech Tool program now. Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364777 Share on other sites More sharing options...
Mackpro Posted March 17, 2017 Share Posted March 17, 2017 Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364778 Share on other sites More sharing options...
fjh Posted March 17, 2017 Share Posted March 17, 2017 (edited) 2 hours ago, Mackpro said: Looks like if you unplug the 7th injector you should have .5 to 3 ohms across the 2 wires . Same if you plug the 7th injectors in and check at the bottom plug on the engine ECM on pins 45 and 62. There are no books on troubleshooting these anymore all in the Mack Tech Tool program now. Yup ! Take Note ! This is an example of WHY You pay the shop rates you do! The crap you see in the pic is the stuff The BIG V (SELLs ) to the dealers to work on the stuff the dealer Sells to you ( and it aint cheap ) . Got to have it to have IT to a have it to have a half good chance of repairing issues ,That unit is just one of many needed to repair these new units ( NO books) Your best chance of self repair Is Guys like Mackpro Who Care about what we are doing for our customers and like to see em succeed! Edited March 17, 2017 by fjh 2 Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364786 Share on other sites More sharing options...
MikeD Posted March 17, 2017 Author Share Posted March 17, 2017 ThanksMackpro. I'll give it a shot. Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364816 Share on other sites More sharing options...
MikeD Posted March 19, 2017 Author Share Posted March 19, 2017 Found the issue. Wires have been pinched behind a bolt when tightened. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364946 Share on other sites More sharing options...
Mackpro Posted March 20, 2017 Share Posted March 20, 2017 I'm glad you found it !! Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-364959 Share on other sites More sharing options...
10mp8 Posted March 12, 2020 Share Posted March 12, 2020 On 3/19/2017 at 6:40 PM, MikeD said: Found the issue. Wires have been pinched behind a bolt when tightened. What wires, I may have the same issue. Quote Link to comment https://www.bigmacktrucks.com/topic/49109-engine-fault-codes-on-mp8/#findComment-445149 Share on other sites More sharing options...
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