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Post by motoman58 on Jul 26, 2009 11:06:19 GMT -5
I have a 93 pu, just replaced engine, mounts, and trans mount. When i accelerate from down low in the rpms the whole truck will shimmy and shake like the drive shaft is bent or something. It gives a feeling like the tires are out of balance, but it happens under acceleration and when i push in the clutch to disconnect the drive line it just rolls normal. I have no idea what it could be, drive shaft doesn't look bent. Possibly a bell housing or flywheel? i just had a new clutch put in. Any feedback would be appreciated.
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Post by calgary4runner on Jul 26, 2009 14:45:59 GMT -5
if it only happens when accelerating this probably isn't the cause, but something as overlooked as rotating your tires can make you shake violently. if the front tires are worn at a different pattern than the back it can be a pretty rough ride. Especially if you have a tire with big knobbies.
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Post by fourwd1 on Jul 26, 2009 19:03:25 GMT -5
Did you by any chance take your drive shaft apart (at the the slip joint)?
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Post by fourwd1 on Jul 26, 2009 19:05:10 GMT -5
Crap, hit enter too soon.
Because if you did, you may have not aligned the splines properly, and the front/rear joints are out-of-phase.
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Post by motoman58 on Aug 5, 2009 11:14:31 GMT -5
i found the cause, its my u joint in the rear. It needs a new spider and spider bearings. the slack in the drive shaft must be throwing the driveshaft out of balance causing a nasty shake. How hard are these to replace? from what i understand i have to take off the driveshaft
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Post by fourwd1 on Aug 5, 2009 11:19:02 GMT -5
Yes, it helps to take the shaft off and put it in a vice.
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Post by Sean on Aug 6, 2009 0:23:16 GMT -5
If you don't have a proper tool you can get away with a very large punch and large hammer or a small ball peen and a big hammer. If you are using the hammer method then yeah, a vice is a big help.
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