Cummins ISL400 runs and quits... questions
I'm currently stuck in a RV campground with a engine that won't run. I called and talked with the nearest Cummins service center and the tech on the phone says he thinks it's the lift pump. The pr...
Forum Discussion
Mr.Mark wrote:YC 1 wrote:
The large relay can run very hot to the touch. Mine draws 1.5 amps so is like having a 20 watt bulb running. The contacts inside are notorious for failing. I am on my third relay in five years. I am beginning to believe the relay should be changed out like a fuel filter as part of regular maintenance.
YC 1, just for future reference since we have similar coaches, where is this 'Big Boy' relay? I will want to keep an eye on it as we have had no problem in 6 yrs. of ownership.
MM.
It's behind the removable panel in the engine compartment on the right side with all the wires, lights and fuses. It's the biggest thing in there and says " BIG BOY" on it.
