leehoell

take that back, got outlet to read, was 510 during regen, then droped to 76-79 at end and when finished. inlet never did read though.

found the problem, accidently put outlet sensor for a cummins on it. looks the same. got new one from mack today, seems to be ok now. while regenning though with vcads, i try to look at sensor parameters and neither nox sensor shows a reading. both show zero. all other parameters read ok, regeant psi, boost, temps. any one else had that problem

got two trucks in shop, both 2011 granite with mp8, keep getting 3226-9 codes abnormal update rate. checked wiring, supply, ground, 120 ohm resistor, all ok. one was at mack dealer and they said they dont really know what causes it, but a new set of injectors usually fixes it. that doesnt sound right. we replaced both nox sensors. any one got some suggestions?