Originally Posted by
Infinity
I would take a few minutes and check the
power steering pump. My original one started leaking and I was chasing a similar issue. If I accelerated hard and backed off up to about 70mph the steering wheel would shake until I slowed down under 50mph or less and then it would settle. Went through three sets of wheels and tires chasing it down. When I cracked open the old pump there was some wear in the vanes, my guess is that at some point the fluid would get pinned to the back of the reservoir allowing some air into the line. New pump cleared up much of the issue. Every once in a while it appears again, but nothing close to what it was.
I checked the
power steering pump fluid level last night - all within specs. No leaks detected. I would hate replacing the pump only to find out it was not the cause of vibrations. Plus, my situation is a bit different - it vibrates mostly at 40mph, at 50 it is less noticeable and at 80 it is almost gone. It is not engine RPM related - I would put it in neutral at 40 mph and vibration will not change.
I feel that vibration feels lees if I accelerate real hard, maybe, because front wheels are not loaded as much?..
Joe,
I have taken the hubs apart, inspected the rollers and bearing races, repacked the bearings and adjusted properly using dial indicator. No change at all unfortunately...