Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Something's shaking over small bumps in road (tranny mounts?)

Featured Replies

Aye,

 

     Got about 400 miles on her(Pearl) Since I installed the new intake valves....

I don't know if this problem existed before the T-belt snapped(only had car for a brief moment before it snapped)

 

Engine mounts were loosened and upper bar to firewall was loosened as well during motor rehab(bent valves) process

 

Here is the situation...

 

 

       There is shaking when going over bumps in the road.

And I mean,,, not really significant bumps either........

Like the bumps I have noticed are like (slow lane highway) truck wear out bumps.....

 

Or like just bad concrete expansion joints on the highway........

 

It really feels to me like it's in the middle of the vehicle... where the shake emanates......

 

I went under and moved/wiggled the tailshaft around from side to side on the tranny

 

It moves around, it isn't like the mount rubber is broken or torn......

 

But, I would say the mount is very flexible...(stretchyish)...  soft  sort of.....(but not to touch --- as far as I know -- I have not pressed on them with my fingers)

Simply said, I can move the tranny tail shaft from side side an noticeable amount(to the eyeball)

 

Any thoughts

 

 

Thanks, Micky

 

 

 

 

 

 

 

 

  • Author

Oh yeah.....

 

 

  Pearl is a 98 Outback with a 2.2L

If the shaking is coming from the front check your strut mounts, they could have gone bad. if this is the case you can buy a pair on ebay for cheaper than you would a parts store, the mechanic may try to talk you into replacing your struts too, you should if your bank account allows you too :)

Lift up on the trans with a pry bar. If it lifts completely off the mount the mount is bad. Engine and Trans mounts are usually pretty soft on these. movement is normal.

 

You had the engine out, did you tighten the engine mounts?

 

Exhaust was removed? All the exhaust mounts hooked up? Hanger bolt on the back of the trans tight?

check everything you touched for this job - engine mounts, etc. 

 

check the rear transmission mounts.  the engine/trans lifting would have put some additional strain on them.  

  • Author

Thanks!

 

 All good points.....

 

   Yeah, I should just take a quick look at motor mounts... make sure they are tight....

I will try and CROW up the tranz......

I got some Rear KYB's Coming with new mounts as well. ( Hoping I can get away with not doing the fronts  Or maybe they were done in the car's past life)

 

   It does feel like the VIB-ing starts in the rear.....  Struts in rear are pretty bad.....

 

                      I can't believe how costly struts and mounts are........

What happened to the days when you could fix your car and still have money to eat?

 

      Micky

Thanks!

 

 All good points.....

 

   Yeah, I should just take a quick look at motor mounts... make sure they are tight....

I will try and CROW up the tranz......

I got some Rear KYB's Coming with new mounts as well. ( Hoping I can get away with not doing the fronts  Or maybe they were done in the car's past life)

 

   It does feel like the VIB-ing starts in the rear.....  Struts in rear are pretty bad.....

 

                      I can't believe how costly struts and mounts are........

What happened to the days when you could fix your car and still have money to eat?

 

      Micky

 

Where did you buy your struts from?  KYBs (OEM supplier) are like $60 each from Rock Auto.  Yes they are more expensive than $15 shock absorbers.

Edited by Mike104

  • 2 weeks later...
  • Author

Put in the new rear struts with new mounts.....

 

Vehicle is 99% better......

 

There is a slight shake in the steering  at high speeds....... Like around 75.... and the it disappears at higher speeds...

 

   Any suggestions on front shimmy.............(  could even be a tire   I am guessing) Tires don't have any kind  of stupid wear on the.....

they are not brand new.... but, they are a good quality tire..... maybe  5 to 10 k on them............

 

                       new front brakes...... new calipers and new rotors.......

 

 

Micky

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.