squeal at 2200 rpm
just finished a 7690 mile 11 state trip with our 5th wheel. Total weight around 18K. My cummins engine (5.9) with 48re transmission started making a squeal when it down shifted pulling a mountain. RPM's would rise to about 2200 and boost to 25 psi. Prior to leaving on the trip I asked the service manager about a strange sound I was having at 2200 rpm and he said it was nothing to be concerned with. At that point it was a tap tap tap about like an old 54 ford lifter, very different from the normal diesel clatter. Now it is a sound about like a throw out bearing going bad in the old 54. while running down the road in overdrive cruising it just hums along like normal. Only when it hits 2200 RPM do I hear it until it passes 2500 rpm at which time it quits and I don't hear it.
Not being a mechanic I would like to have some thought when I take it in to the shop. I will not be able to duplicate the sound and I doubt it would create a code so diagnosis will be by guess.
Has anyone had this issue and if so what were the end results?
Not being a mechanic I would like to have some thought when I take it in to the shop. I will not be able to duplicate the sound and I doubt it would create a code so diagnosis will be by guess.
Has anyone had this issue and if so what were the end results?
