JerryKelly wrote:
Freightliner XC Chassis, Cummins 350 ISC
Problems: Exhaust brake not working, coach surging at 66 - 70 mph.
Diagnosis: Exhaust brake not recieving power signal from the instrument panel. Surging was caused by fuel distributor in fuel pump.
The exhaust brake was diagnosed and fixed on the 2nd day. Fuel pump problem was suspected as the cause of the surging, but the Freightliner dealer was told to first diagnose the problem using Freighliner or Cummins software. It took 2 days to load the diagnostic software onto their laptop. Then Cummins took 2 more days to authorize the Freightliner dealer to work on the Cummins engine. Cummins would not ship the part until the authorization was complete (day 4). This was all due to a Cummins shop down the street. Cummins protects the turf of Cummins dealers. Freightliner could not expedite the process. Due to my Freightliner warranty, I could not go to Cummins first unless I was willing to cover the diagnostic costs in the event the surging problem was not a cummins problem. I was not told about the Cummins issue until day 4. My engine brake repair was a freightliner issue, not cummins. I got my coach back at 5:00 pm on day 5. Just in time to drive back home.
sounds like a lot of Cummins breakdowns,alot of diesel breakdowns,i can't work on them wish i knew how,thats why i trust my 460 to death ,it won't let me down knock on wood,,,want to learn diesel have to hit some books,,thanks for posting everyone,,good forum topic