vibrations after shop fixed leaking 4speed
Thread Starter
Advanced
Joined: Aug 2007
Posts: 66
Likes: 4
From: Perth, Western Austraila
vibrations after shop fixed leaking 4speed
Hi all , Hope someone can point me in the right direction, I had my mechanic take the 4 speed out my 80, then took it to another trans shop to fix the leaks apparently not meant to have washers on the front and side bolts, also ext housing bush changed. Now its all back together I have some serious vibrations coming through the car, mainly on acceleration gear stick really rattling away, feels like a rotational vibration the quicker i go the more it vibrates, possibly a drive shaft balance issue? My mechanic wont take responsibility also the speedo is jumping all around now. Any ideas anyone?
Race Director
Joined: May 2006
Posts: 18,756
Likes: 2,589
You can try unbolting the driveshaft and rotating it half turn and reconnecting. Check for anything loose, transmission to engine, transmission to mount, shifter to bracket, etc. Check the speedo cable where it attaches to trani possibly binding.
Instructor
Joined: Aug 2007
Posts: 200
Likes: 0
From: Falls Church Virginia
worked for me I wouldn't have belived it but 
Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 331
From: Indy Indiana
driveshaft U-Joints could need replacing, something might have got banged up while the driveshaft was out.
speedo cable could be binding, make sure it is lubed up and not really obvious kinks or 90 degree angles. ( search this forum, there are several ideas on properly lubeing a speedo cable).
speedo cable could be binding, make sure it is lubed up and not really obvious kinks or 90 degree angles. ( search this forum, there are several ideas on properly lubeing a speedo cable).
Burning Brakes
Joined: Dec 2003
Posts: 1,004
Likes: 7
From: Adelaide South Australia
Check the unijoint caps to make sure ALL the rollers are in place too while you flip the shaft....
maybe the cap fell on the floor when they were removing the shaft at the workshop, and didn't put all the rollers back in.
Any chance you may have a clearance issue after reinstallation?
trans touching the body or firewall somewhere possibly?
Hope you solve it.
maybe the cap fell on the floor when they were removing the shaft at the workshop, and didn't put all the rollers back in.
Any chance you may have a clearance issue after reinstallation?
trans touching the body or firewall somewhere possibly?
Hope you solve it.
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Thread Starter
Advanced
Joined: Aug 2007
Posts: 66
Likes: 4
From: Perth, Western Austraila
rotated the drive shaft half turn same thing, one of the uni cups didnt seat all the way down until i did the bolts up there is some excess welds on where the u joint cradle meets the shaft. But was like this already before the box came out.hmmmm
