Hey everyone. I'll cut to the chase:
1991 5.0 LX
AOD with 4.10 gears (installed by prev owner)
I have a speed (not RPM) related vibration. It's not really pronounced until about 65 mph. After that, it just gets louder an higher pitched.
It seems to be coming from the middle of the car. What's strange is that it doesn't happen under load, like accelerating or climbing a hill. It only happens when letting up on the throttle, or like if I'm on a level stretch with cruise control, it comes and goes as the system fluctuates just a little.
When I heard it, I just assumed it was u-joints, and replaced them. Apparently aluminum drive shafts have helped people with various vibrations, but that's out of the question right now. I've also been reading about the tail shaft bushing, and I may try that next.
What I'm worried most about, is the rear end. I suppose there would be considerable gear whine if a bearing were bad. Is there a way to check it without taking it apart?
1991 5.0 LX
AOD with 4.10 gears (installed by prev owner)
I have a speed (not RPM) related vibration. It's not really pronounced until about 65 mph. After that, it just gets louder an higher pitched.
It seems to be coming from the middle of the car. What's strange is that it doesn't happen under load, like accelerating or climbing a hill. It only happens when letting up on the throttle, or like if I'm on a level stretch with cruise control, it comes and goes as the system fluctuates just a little.
When I heard it, I just assumed it was u-joints, and replaced them. Apparently aluminum drive shafts have helped people with various vibrations, but that's out of the question right now. I've also been reading about the tail shaft bushing, and I may try that next.
What I'm worried most about, is the rear end. I suppose there would be considerable gear whine if a bearing were bad. Is there a way to check it without taking it apart?