I removed the rear drive shaft and drove it in 4High to drop it off for balancing - no vibration at all when I ran it up for a few seconds to 65MPH, so it is in the rear end. After putting the balanced drive shaft back on, no vibration up to 80MPH. But, when I let off the gas and coast at a high speed, the rumble comes back for a few seconds as I coast down to 55mph. Is that an indication of a rear end (ring gear/pinion gear) problem, or maybe a pinion bearing going bad?
Monday, July 14th, 2008 AT 11:06 AM