An odd vibration...
So I have this odd vibration in the front of my '95 Classic. I thought it might be the front drive shaft, so I had it balanced. Vibration is still there. So I am hypothesizing that maybe, just maybe, it might be my rattling cats. Here is what is happening:
No vibration at all under 60 mph. At 60 plus I get a vibration that is, oddly enough, controllable by throttle input. Under a normal cruise(no load) no vibration, but add about 10-30% throttle(like climbing a hill with cruise contol on) and the vibration appears. In addition, there seems to be a soft vibration on decel too at the indicated speeds.
I am thinking that the cats might be bad enough that the vibration could resonate at a certain engine rpm. What I have not done is try a different gear, i.e change the rpm relative to speed.
Does anyone have any insight?
--Kris
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