Hey all. I have been working on tracking down a vibration at 47-52mph. At the speed it wobbles pretty good and I notice that the trans and the tcase shifters are shaking pretty good at this speed. It feels like its from the rear. I have access to spare parts and put in a different drive line and swapped out an axle shaft that had a slight wobble to it. This made no difference.
I got under the truck and jacked the tranny up. I noticed the mount stretched a bit and then I took these pictures. Needs to be replaced right? Any recommendations? What else should i check for the vibration? Its not the tires or wheels(both new, no change). Can a bad trans mount cause this vibration on its own?

 

Yeah, the tell tale sign for me was my trans and t-case shifters moving tons when I pressed on the gas, as well as shaking more than normal like your case.. Put in an OEM mount and it's back to normal.

There is an aftermarket mount too, but I think it only works on the 4 cylinder which is why I had to get the OEM mount for my v6.

 

im about to put in a solid mount but with rubber engine mounts im curious to see if it will stop the thunk when i put it in gear, clutch is worn but still working.

 

Check your u-joints, and the shaft nut under it. Mine had bad u-joints, broken mount, and the nut came loose from all the vibration.

 

i agree with skypilot... i had the same problem.... so i took the u-joint off and it was bad.. i would take the u-joint off and replace it

 

I put in a spare drive shaft to rule this and an unbalance issue out. There was no change. My new mount comes in tomorrow.

 

how mutch did you pay for the mount, my local dealer wanted $175.00 bucks for
the oem mount.and that was at a dealer discount cost.lc engineering has them for $109.00.

 

Napa wanted 20$ for the manual trans one. Ill find out tomorrow if it fits.

 

i hope its not the wrong one im looking on my napa prolink(website for napa dealers) and the 20 dollar one is for a 2wd,you should call them and see what the pn is it should be a balkamp #8388 list $106 bucks.if it is pn6201077 or6201239 it is for the 2wd.i just went through this with them they didnt have any in stock anywhere it had to come from the factory.i hope this helps i hate waiting for parts all that time to go to do the job and have the wrong one.they dont even list the one in your pic for the first gens.i had to look up your year of truck to find the correct one.

 

here is a pic of the solid mount installed truck still in shop no test drive yet

 

Yeah it was the wrong one. There computer list it incorrectly because they showed me. The one listed for an 87 looked closer and was listed at 106 but for sale for 71...but the couldn't get it. Back to the drawing board.

 

If anybody knows where I can find a mount for my auto trans 86 4runner please let me know.

 

if you can post a pic of it i can try and find it on my napa prolink.when looking for mine i came acrost a couple different variations of mounts

 

Is the mount different for autos? Doesnt the mount still attach to the transfer case? That would make it the same right? I ask this because I am not familiar for with the autos. Here is a link to a few mounts

http://www.trail-gear.com/transfer-case-mounts

 

does it look like this,this is what napa shows for a 92 auto fist auto i could find on prolink napa pn 6201631

 

this is what they show for a v6 pn balkamp 8508

 

ok so the solid mount is in and i took it for a test drive around the block and soon as i started it up i noticed the vibes.i can noticably feel alot of the motor vibes.seems like alot more power to the wheels too? i see now why there is rubber spacers betwen the mounts but its not that bad once your driving.but the thunk when i put it into gear is gone.
sorry if im hijacking your thread but i hope im helping with the issue by letting you know what i went trough to get the trans mount issue corrected.

 

No prob man. Good info!

 

Not sure if they are different. Based on this thread I am inclined to think they are

https://www.yotatech.com/forums/f37/...-mount-211986/

I'll call Trail Gear on Monday morning & find out for sure. Thanks for the link.

That does look similar to mine. I will double check when I get home in few. Thanks.

 

Any updates dhall50?