F 150 noise--help!
1987 F150, 4 speed manual, 300 6 cyl., 2 wd. When I bought it, when you went down a steep grade and let off of the gas, there was a faint roar that I thought can from rearend. Been that way for 2 years. I thought I was having a universal joint going bad, so I had both sets done last month. Now, when I go down the road above 45 mph, a roar starts in and gets louder the faster you go. At 55 it is unreal. I took it back to the place that replaced the u joints and they couldn't find anything. Took it to a tranny shop and they thought it was right wheel bearing. Had them checked today and they are good. When you drive with your hand on the shifter, there seems to be no vibration, but when I was riding along with the tranny guy, I noticed vibration in floor board. Anyone got any ideas?