I had asked before in regard to a vibration. I searched again before making this and didn't want to clutter that thread with a different perspective on things.. so here goes again.
PROBLEM: Driving 65+ mph, vibrations are very pronounced, from the rear of the vehicle. It is strong enough to slightly "shimmy" the door panel/truck through the whole cab. Accelerating further seems to enhance the vibration slightly. I didn't go past 75, but it wasn't going away.
The shifter handle (manual trans) and t-case handle, both have minimal vibrations under all conditions versus what the rest of the truck is going through.
I am mechanically able, but I'm a backyard mechanic. Thing's like this eat me up due to inexperience and when they don't make sense, I'm chasing my tail. Combined with 6 weeks now of bronchitis, I had it inspected, details below;
Driveshaft was clocked after initial re-assembly post clutch job. No change.
Drivetrain was inspected. Got a clean bill of health. In gear, on the ground, my quick test revealed no play at all in the u-joints. Roughly 1/8 turn on the driveshaft before thing's tightened up. Didn't seem excessive. Driving truck, getting on and off the gas, I can hear a faint clunk after truck transitions to deceleration. Nothing otherwise. This seems mostly like normal truck mechanical noises. Perhaps the pinion backlash is excessive? What is normal there?
I had the rear wheels rebalanced using the proper Toyota hub at discount tire. They were off 1.5 oz, but it wanted a lot of weight. 6 oz in total on the drivers side rear. The tires are new, 2k miles new. Cooper A/T stuff in stock size. Rebalancing did nothing for my freeway symptoms.
I have someone telling me they are 99% sure it's runout on the wheel/tire or both after describing the freeway experience. Does anyone else have insight on this? I want to get this done right and 4 hours of shop inspection/brain storming got me nowhere this weekend. It honestly almost feels worse after the wheel balancing.
PROBLEM: Driving 65+ mph, vibrations are very pronounced, from the rear of the vehicle. It is strong enough to slightly "shimmy" the door panel/truck through the whole cab. Accelerating further seems to enhance the vibration slightly. I didn't go past 75, but it wasn't going away.
The shifter handle (manual trans) and t-case handle, both have minimal vibrations under all conditions versus what the rest of the truck is going through.
I am mechanically able, but I'm a backyard mechanic. Thing's like this eat me up due to inexperience and when they don't make sense, I'm chasing my tail. Combined with 6 weeks now of bronchitis, I had it inspected, details below;
Driveshaft was clocked after initial re-assembly post clutch job. No change.
Drivetrain was inspected. Got a clean bill of health. In gear, on the ground, my quick test revealed no play at all in the u-joints. Roughly 1/8 turn on the driveshaft before thing's tightened up. Didn't seem excessive. Driving truck, getting on and off the gas, I can hear a faint clunk after truck transitions to deceleration. Nothing otherwise. This seems mostly like normal truck mechanical noises. Perhaps the pinion backlash is excessive? What is normal there?
I had the rear wheels rebalanced using the proper Toyota hub at discount tire. They were off 1.5 oz, but it wanted a lot of weight. 6 oz in total on the drivers side rear. The tires are new, 2k miles new. Cooper A/T stuff in stock size. Rebalancing did nothing for my freeway symptoms.
I have someone telling me they are 99% sure it's runout on the wheel/tire or both after describing the freeway experience. Does anyone else have insight on this? I want to get this done right and 4 hours of shop inspection/brain storming got me nowhere this weekend. It honestly almost feels worse after the wheel balancing.
Last edited:
hone:
