put truck back to stock. same thing.
truck will rev but it misses and shakes all the way through the rpm range.
checked rail pressure and it shows to be matched pretty consistent with desired.
hey guys,
i had a lmm come in with a fuel knock and bucking and jumping on the road. reduced engine power and barely would pull it self. showed 3 and 5 cylinder misfire on the computer but that was the only codes. heres what I've checked.
crank ring good and tight.
load tested and ohm tested...
sorry for posting from different names. somehow i managed to gain a different user name when i loaded the tapatalk app on my new phone a few months back.
alright everyone i have a possibility of putting together a few engines and need to poll the audience. i have the option to buy 4 lml/lgh engines. they came from ambulances so I'm leaning towards the lgh. i know 2 of them have bad cp4 pumps, 1 was wrecked and busted front accessories and oil...
rite on! i have the stuff to convert my 05 from the fold down console to the full console. just wonder if the dash pieces are the same? guess i can try and see. just want to see if anyone can give some info before i go to tearing it apart.
thanks
i need to find someone who can flash a ecm/pcm on a bench harness. Ran my trouble shooting for the data stream. Found to much voltage on the data wires from the ecm to the gpcm. I have a new ecm/pcm thats blank and plugged it up then i have no voltage on the wires. So i guess i need someone to...
alrite guys, I've load tested the wires from obd2 plug in the cab to the harness under the hood to the pcm, tcm, bale connectors and gpcm. all wires carry load and show to be good.
i can communicate with the tcm. but can't communicate with gpcm or ecm. the gpcm is first in line so I'm...
should be back on this around the end of the week. I'm tring to get a cummins isx built then i can go back to the top kick. so i haven't abandoned this rig yet.
i was thinking about this last night. should it matter if the data wires are in a different pin? I'm using the truck ecm, truck harness, and truck data plug. so it should be just like it was before they put the motor in.
i know that i can't communicate with the gpcm to get flow rates or...
i have no information from the ambulance. customer had his mechanic swap the motors out. all i have is the truck now with a running engine but no data communication.
duramaxnate: is there something your looking for? i might can call and find out where it came from and stuff. might get lucky...
my guy at the dealer said there was a bunch of codes in the ebcm and that it was possible that it was taking the data link down due to them. I've looked at the data diagram and the GM LAN wires don't go through the ebcm........could it be killing the Class 2 Serial Data wire and that be my...
Ecm is the original from the truck. Supposedly everything ambulance related was removed and replaced with original parts. We have a new Ecm from dealer that's blank. They can't load a calibration in it because they can't communicate with it either.
hey everyone. this will be a slightly long post but its necessary to get all the info out there.
the truck: 08 4500 4x4 regular cab auto. dpf/egr intact.
the problem: Customer apparently blowed a motor up (pipeline company). they had their mechanic pull the cab and motor. bought another...
here are 3 logs and idling/in gear with the injector balance rates. I had to put them in a folder to be able to attach them. I guess I haven't figured out how to attach just a log file. truck runs better until you hit overdrive. then it falls on its face. even empty. I plan to check for boost...