Hey all, I need some help. I have a 1993 ford f250, 4wd, manual transmission with a 351W, about to turn over 158,000 miles.
When im in 3rd/4th running 1300-1800rpm or about 25-40mph I get an odd rumble; kinda like the rumble strips on the side of a road but not as rapid and it sounds a lot deeper. Its not from the steering wheel or when im
Braking, just maintaining speed or accelerating. The sound seems to shake the whole truck; coming from underneath albiet I can’t pinpoint the source while driving.
This upcoming weekend im getting the tires rotated, i should be able to pull them prior and get a good look see as to whats up.
Ive checked the driveline/u-joints, and steering components; that all seems good. What else (in order of severity and cost) should I check?
Brakes, wheel bearings/axle components, spark plugs, tranny, what else?
One other question: ive been given recommendations for how to check u-joints, and ive checked it every way. Whats the correct or way a mechanic would do?