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JRsEquipment

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About JRsEquipment

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  1. Thank You! we finally got it to clear yesterday. Yet I am apprehensive it may return. Earlier in our diagnoses I found a TSB stating if it had original part# NOx sensors to replace with current part number, Truck had one new part # NOx sensor on inlet and old part # on outlet so we replaced the outlet, did multiple regens again and those codes would not clear. Took Truck on another 30mile test run at highway speeds and 14miles in light went off and code cleared.
  2. bump Ok, I found this quote on another post, Pay attention to boost pressure says 8-12 without DRV valve. This truck has a DRV valve and is only showing boost 1.25 PSI during regen. Towards the end of regen outlet NOx showed 510ppm, after regen and hold throttle floored at went down to 28ppm and that crept up to about 170-200. ""First go into the scr system test, There will be an scr inducement reset. Perform that, Then make sure you perform the scr learned data reset for the parts already put on. Sometimes when you have the inducment to clear on th
  3. Ok, I found this quote on another post, Pay attention to boost pressure says 8-12 without DRV valve. This truck has a DRV valve and is only showing boost 1.25 PSI during regen. Towards the end of regen outlet NOx showed 510ppm, after regen and hold throttle floored at went down to 28ppm and that crept up to about 170-200. ""First go into the scr system test, There will be an scr inducement reset. Perform that, Then make sure you perform the scr learned data reset for the parts already put on. Sometimes when you have the inducment to clear on the 2010 emission products it may take 2
  4. Suggest separate topic for Regen systems. 2011 GU713 MP7. Truck in 5mph derate. Had SPN-5246-O, SPN-4094-14. Tested everything I could with PTT, EGR, turbo, doser, etc. Use scope to inspect SCR catalyst, checked/tested/changed DEF fluid, Cleared codes. 4094-14 would not clear, did multiple regens including sublimation regen, code would not clear. I am not sure on Mack regen temps but they seem low(see attached). Nox sensor readings in PTT always show "0". If I use JPRO Nox sensor readings are greyed out. Then says "DEF quality being Evaluated, Engine in derate, 5mph Removed", perform reg
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