Driveline vibration on 1st gen 4runner
#1
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Driveline vibration on 1st gen 4runner
I just bought a used 88 4runner yesterday and noticed that when decelerating in gear, there is a vibration coming from the rear end of the vehicle. anyone have experience with this? maybe a u-joint or the diff? I got a good deal on it too-- only 2000 dollars, no dents, came with 33's, slider bars and the engine runs well!
oh, one other question, the owner never put it in 4WD in about 4 years, is there some type of maintenance that needs to be done to the transfer case or the front axles?
Tim
oh, one other question, the owner never put it in 4WD in about 4 years, is there some type of maintenance that needs to be done to the transfer case or the front axles?
Tim
#2
Ya, bad u-joints can cause a driveline virbration, but you usually notice it all the time (not just decelerating). Also, it could be that the driveshaft needs balanced...I read about that a few times as well. Since your rig is 15 years old, replacing the u-joints wouldn't be a bad idea anyway.
#3
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thanks dude..
just for fun, i took the rearend out and had it rebuilt and put a new u joint in the driveline. the vibrations gone now-- and so is the funky whining noise from the rearend.
T
just for fun, i took the rearend out and had it rebuilt and put a new u joint in the driveline. the vibrations gone now-- and so is the funky whining noise from the rearend.
T
#4
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Originally posted by Duffdog
tjust for fun, i took the rearend out
tjust for fun, i took the rearend out
yea, that is loads of fun isnt it?
I'd change the front diff fluid and if you have manual hubs, take off the 8 or so 10mm bolts and look inside and see if there is still some grease in there. 4 years without 4x4, with 33's and sliders? I dont get it.
#5
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can you change the front diff fluid easily? like i wont have to disconnect any belts or brackets or stuff like that?
--o ya, the sliders really arent sliders, they are the fake-ass nerf step bars that bolt to the shackle mounts. The people that owned it before me just bought it for groceries and driving around the city, i think it was the owners before them that had the problem....
T
--o ya, the sliders really arent sliders, they are the fake-ass nerf step bars that bolt to the shackle mounts. The people that owned it before me just bought it for groceries and driving around the city, i think it was the owners before them that had the problem....
T
#7
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How do you change U-joints?
I assume you pull the drive shaft off, but do you have to get a special tool? I have a bit of vibration at hwy speeds and mine is an 87' 4Runner.
Thanks
I assume you pull the drive shaft off, but do you have to get a special tool? I have a bit of vibration at hwy speeds and mine is an 87' 4Runner.
Thanks
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#8
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first of all- before pulling off the driveshaft, reach under there and try to shake it up and down, back and forth. if there is any movement in the driveline at the u-joints, then change them. my u joints were actually burned and expanded and there were no needle bearings left--just metal grinding on metal. the manual says to use a hydraulic press to remove the cups, but i broke my vice doing that and elected to just use a big ass hammer and a socket that matched the diameter of the cup. after an hour of hammering, the u joint just fell out.
Tim
Tim
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