Hey guys. Just for shits and giggles, I drove VERY conservatively last week, and actually picked up 2-3 MPG. But in the interim, when holding steady between 45-50 MPH, I have a vibration. It's not tire balance, as I rotate, and balance them every other oil change (6,000 miles).It feels like it's coming through the floorboard. I've gotten the car to speed on an empty highway, put the trans in neutral, and it doesn't really make a difference. I'm leaning towards it possibly being the driveshaft out of balance. I have the old shaft from my old 89 CV, and I have to change the rear trans seal anyway. I was wondering if anybody has had the same problem, and what else I should be looking for. Thanks in advance.
MIKE
MIKE
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