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The noise is gone. Just returned from a trip with 20 hours of highway driving. The truck was fully loaded with Bigfoot camper and kayak trailer and no drone. The main drive shaft was the culprit, with the internal guts having come loose it was enough to create the noise but no vibration. Many...

I took my truck into the Dodge dealer and told the diesel tech about the pulsing drone noise and the suggestions I had received from the TDR members. He took the truck for a highway speed test drive to determine the cause and ruled out the transmission and differentials. At first he thought it...

I had the front axle U joints replaced last year and the drive shaft U joints replaced in January. I will have them check the front drive U joints (trans case to front diff. ). The transmission functions like new - no shift problems at all. It is a bit of a mystery, since the noise is so speed...

AMassaro, thanks for the helpful information. I now have my suspicion it is the torque converter. Although not good news at least I have somewhere to start when I see the service technician.

I am getting a pulsing drone sound from the drivetrain area while cruising at 54-56 mph and 64-66 mph. It is more noticable while under load, going up hill or with a load on the truck. No change in rpm or engine performance. It is not present at other speeds or when I take my foot off the...

My truck had knock between 800-1200 rpm as rbattelle described. Turned out to be a faulty # 2 Injector and my truck was out of action for 2 1/2 weeks- 14 days waiting for the injector to show up. If you have the injectors replaced make sure they put in a NEW valve cover gasket. They did not on...

TALES OF A WARRANTY REPAIR BY RGOWER See my previous post for knocking symptoms and initial attempt to get it fixed. I took my truck back to the dealer and showed them my email from Cummins. I then took the diesel tech for a drive to demonstrate the knock. He agreed he had missed the...

Engine knock Hello Northerner and rbattelle. Sorry for not posting this sooner. I got my truck back from the dealer 2 weeks ago and was told there was nothing abnormal with my engine. I had given them a detailed written explanation of when the knock was present. I was not satisfied with their...

Sorry if I offended you long time Cummins owners, but I honestly have nothing against diesel noise. In fact my truck is worth every knock and clatter as long as it is normal. It is just that any engine noise that suddenly appears and stays makes me nervous. If this is normal I am happy but if...

engine knock My 03 was quiet until it reached the 10,000 mile mark. I now get an obvious knock between 800 to 1200 rpm while accelerating from a stop in forward and reverse when the engine is warmed up. The knock is not audible above or below these rpms. I have not noticed any difference in...