I would not suspect an electrical issue with the faults you have provided. Was the fuel injector reset performed in Insite when the injectors were replaced? Has a injector performance test been run with pass results? Has the rail decay been checked?
The only other issue is a return restriction back to the tanks on the injector return. This may test good in the shop bay as it seems like you always have issues on the road and running under load for a while.
Cummins ISX15 never ending check engine lights
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by javelinjeff, Apr 30, 2019.
Page 2 of 5
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
What are the miles on engine right now?
My guess is your over 500,000 miles?
The CM2250 is notorious for dropping number 5, or 6 cylinder liner from carbon build up.
What do you mean bottom end was gone over , when fuel pump blew?
Many times with a cm2250 when the fuel pump blows the engine needs an inflame.Last edited: May 5, 2019
-
spsauerland Thanks this.
-
-
-
-
Was there any rail decay? -
-
Also, after truck is cleared of codes, it will run strong, then it will hesitate or go dead pedal for a second or two, sometimes up to 5 seconds, which temporarily triggers yellow light on tach. This will also happen when cruise control is being used which rules out TPS
-
Update, transfer pump replaced, fuel pressure relief valve changed, fuel pressure sensor replaced, fuel lines replaced, injectors are being removed for inspection. Cummins Tier 3 Diagnostic technician at a loss as to why truck continues to have erratic fuel pressure. Truck has had test pump head installed in place of new, truck has had test ECM used to rule out ECM, truck has been run on isolated fuel source to rule out supply issues from tanks. It is getting to the point of having to remove radiator cap and replacing truck underneath it. I feel that the biggest part of the problem is the lack of concern by Cummins to isolate and resolve the problem at their expense. I have spent over 16k on this issue that remains unsolved, and all the repairs on this truck have been performed by licensed/ certified Cummins repair facilities.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
Page 2 of 5