Repete86 Posted December 4, 2016 Share Posted December 4, 2016 (edited) Just curious how big of a job on a cxp613 it is to change harness and what a new one would cost? Thanks Edited December 4, 2016 by Repete86 Quote Link to comment https://www.bigmacktrucks.com/topic/47873-mp7-2007-04-epa-harness/ Share on other sites More sharing options...
Macktech689 Posted December 4, 2016 Share Posted December 4, 2016 The harness for that engine runs in the $600 range I think, I don't buy them I replace them. I've replaced dozens of engine harnesses, it's not a bad job as far as I'm concerned. The worst part of the job on a 04 emission's MP-7 is getting the harness disconnected from the mass flow tube module behind the alternator bracket. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47873-mp7-2007-04-epa-harness/#findComment-353959 Share on other sites More sharing options...
Mackpro Posted December 5, 2016 Share Posted December 5, 2016 Make sure you get the good oil/heat resistant gray wire ties for under the valve cover and around the turbo. Make sure you keep the harness away from the timing gears under the valve cover at the back as well Quote Link to comment https://www.bigmacktrucks.com/topic/47873-mp7-2007-04-epa-harness/#findComment-354003 Share on other sites More sharing options...
Repete86 Posted December 5, 2016 Author Share Posted December 5, 2016 Ok thanks, I see oil on harness coming out of valve cover 6-8 inch, I also had oil in plugs at ecu, I cleaned ecu with electric cleaner, no test drive yet. I picked up a sporadic miss and lost boost and when I hit a bump it goes away until next bumper of coarse. So from what I have seen in other post must be what's happening. Thanks again for replying!! Quote Link to comment https://www.bigmacktrucks.com/topic/47873-mp7-2007-04-epa-harness/#findComment-354025 Share on other sites More sharing options...
Repete86 Posted December 7, 2016 Author Share Posted December 7, 2016 Update.. i ended up taking truck to a Mack shop to replace harness and had over head run, harness was shot, cracks in wires at injectors, glad I had them do it! Truck has 840,000 on it, valves where .10ths loose, they said cam looked good, makes me happy to here that! Also new oil pan gasket done, oil pick-up tube clamp was cracked so new one will be put on, sounds like motor should be good for another 500,000 miles. I hope Quote Link to comment https://www.bigmacktrucks.com/topic/47873-mp7-2007-04-epa-harness/#findComment-354243 Share on other sites More sharing options...
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