Shaking / Vibration while accelerating

crf250guy · Sep 3rd, 2006, 03:58 PM

I have a 93 King Cab SE 4x4 (V6). When im accelerating under heavy load at low RPM the entire truck lightly shakes. It will do this in any gear. Recently the transmission went out so I installed in a reman tranny and torque converter, had the transfer case inspected, replaced the carrier bearing and all four u-joints, yet it still does it. If anyone has any ideas or has the same problem, please let me know. I should probobly mention that the truck has a 3" body lift (with no suspension mods) and has 32x11.50 tires. I am sure this is magnifying the problem.

-Thanx
Dustin

jerryp58 · Sep 3rd, 2006, 04:07 PM

Quote:

Originally Posted by crf250guy

I have a 93 King Cab SE 4x4 (V6). When im accelerating under heavy load at low RPM the entire truck lightly shakes. It will do this in any gear. Recently the transmission went out so I installed in a reman tranny and torque converter, had the transfer case inspected, replaced the carrier bearing and all four u-joints, yet it still does it. If anyone has any ideas or has the same problem, please let me know. I should probobly mention that the truck has a 3" body lift (with no suspension mods) and has 32x11.50 tires. I am sure this is magnifying the problem.

-Thanx
Dustin

Broken motor mount?
Threw a wheel weight off?

It didn't happen after the U-joint replacement, did it?

crf250guy · Sep 3rd, 2006, 08:16 PM

Its done this as long as ive owned it and it quite a bit more that a wheel weight. Thanks thought.

dvdswanson · Sep 5th, 2006, 05:30 PM

just a thought, are the flexplates/flywheels balanced on 3.0L engine? if so, that may be something to look at. otherwise, go with what jerry said about the eng. mount. maybe just put the truck on a lift and start trying to move things under the truck to see if something is loose.

dflw_99 · Sep 5th, 2006, 05:43 PM

WHAT ABOUT YOUR TRANSMISSION MOUNTS???

**88pathoffroad** · Sep 6th, 2006, 09:27 PM

Could also be engine mounts. Open the hood, start it up. Firmly place your foot on the brake and give it a little gas. Does the engine move excessively back and forth?

crf250guy · Sep 14th, 2006, 10:31 PM

Quote:

Originally Posted by 88pathoffroad

Could also be engine mounts. Open the hood, start it up. Firmly place your foot on the brake and give it a little gas. Does the engine move excessively back and forth?

I checked the motor mounts and they seem to be fine, the motor barely moves in first or reverse. The transmission mount was replaced when i replaced the tranny. Thanks though.

93Hustler · Sep 16th, 2006, 10:12 AM

Maybe drive shaft is not balanced properly.

**88pathoffroad** · Sep 19th, 2006, 12:06 AM

Have you tried rotating the tires front to rear to see if it changes?