05-01-2017 08:28 PM
05-01-2017 08:16 AM
We are using the correct gauge to adj the injectors. We had the truck to CAT and had the truck disconected from the ECM, there are no lights on and codes in the ECM. This is not just a "skip" it is breaking up both with and without a load, above 1600 under a load when over 150 degrese. When not under a load when left at high RPMs it misses at 1800 and above when over 150. Please feel free to call me at 540-998-8800.
04-29-2017 11:13 AM
04-28-2017 01:13 PM
At one time while throtle was wide open, when the fan was manually engaged it broke up and when the fan was disengaged it stopped. It does not break up until the engine reaches 150 degrees. Only with wide open throtle while in garage. When under a load (on the road) it breaks up at 1600rpm and above on a hard pull.
04-26-2017 12:27 PM
I am working on a 3406E cat in a 1999 KW w900L. over 1million miles on truck. unknown mileage on rebuild.
This truck was breaking up over 1800rpm. It went to CAT, they put it on their computer and they said it was probably the injectors or the injector wiring harness. I replaced both and it still has the problem. I replaced the engine wiring harness, ECM, cyl head, all sensors, all fuel lines, fuel filter housing and filter. Visually inspected the Crank shaft. 90 to 100 lbs of fuel pressure. Ran a clear line off the fuel return line, no air in line. Took it back to CAT, they disconnected truck from ECM, still has the problem.
My local CAT dealer in Roanoke VA has been VERY helpfull and has said that I have done all they can think to do. Need help.