Advice on bad braking shudder - Dennis?

A forum to post about other vehicles (ex: post about your Toyota that won't start)

Moderator: Staff

Advice on bad braking shudder - Dennis?

Postby Oro » Fri Jul 31, 2020 4:46 am

OK, so me thinking I'm all that great, maybe not...

My ex-neighbor with the Subaru B9/Tribeca texted, and it was shuddering badly. Talked about in May: ... 4&t=142911

I drove it tonight and it's only when braking between 65 and 55. And it's fairly rough. General shaking that is the whole car, not just pulsing through the brake pedal/steering. Otherwise, driving and accelerating or braking at all other speeds, the car drives like I left it in May, VERY nicely. The rotors were turned, and I put in new ceramic pads. I bedded them together with a controlled series of panic stop, per good practice, so that shouldn't be an issue. Any other speeds, it's smooth as silk, brakes/steers/etc. lovely. Frankly, better than it should at that mileage!

I am thinking it must be a lower control arm bushing? I recall when I was under it inspecting it in general, I was questioning the right front rear control arm bushing, but then I went on-line and looked at pictures of replacement bushings and they had similar voids. The car has 221k on it so I can't imagine it NOT needing some control arm work by that point so I'm thinking that. I of course can jack it up and look again, I'm just spit-balling so I refine my thinking before doing that in a few days.

I have to say wrt the Tribeca, I'm impressed. My neighbor, who doesn't drive much any more, has a 2017 Outback ltd/loaded model with 13k on it; I drive it often (I did today) and it's a nice car. This 2006 Tribeca is very smooth, very well built, stacks up well. I gather the Tribeca was actually positioned at the top of the Subaru line at the time but just didn't catch on? I have driven other Subarus from that period and they don't have this level of refinement and build quality (new ones certainly do; not bashing the brand).
1998 Acura SLX. OME 929s and front crank, KYB tubes. Retro'd Aisin manual front hubs.
Home rebuilt 4L30E doing great. Aux cooler and temp gauge. Big thanks on the rebuild to Buster28, Jerry (jlemond), CalG, and others.
Factory(US dealer) side steps and roof/ski rack (Yakima).
Zu Royalty
Posts: 1226
Joined: Sun Sep 26, 2010 3:46 am
Location: Seattle-ish
Has thanked: 15 times
Have thanks: 128 times


Re: Advice on bad braking shudder - Dennis?

Postby DSUZU » Sat Aug 01, 2020 8:19 am

Yes, check those control arm bushings. I'm not all that familiar with the Tribecas, but a lot of the Subaru components are the same. My daughters 2002 Forester (240K plus miles now) had some shudder issues. That turned out to be tires. It also has a clunk when you first put it in reverse. I suspect that may be the bad (loose) lower control arm bushing on the right front. Best I can suggest is get all 4 wheels off the ground and check for movement or play in all axis. Try moving the LCAs back and forward with a pry bar while watching for movement. There is (again - Tribeca vs what I have) a carrier bearing on the drive shaft, might check that too. Dennis
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.
City of St Petersburg (Fl) Fleet Maintenance 8/23/83 - 12/4/2018 (Retired). Started new job 6/4/2019. Was retired, now just tired.

If your wife has 5.00, and you have 20.00, your wife has...25.00

"Water is one of the greatest essentials of life. Without water, you can't make coffee."

Forget the "free education". Why waste time. Just give me the "FREE INCOME".
I am the Stig
Posts: 8869
Joined: Fri Mar 16, 2012 8:28 pm
Location: St Pete Florida
Has thanked: 277 times
Have thanks: 885 times

Return to Other Vehicles

Who is online

Users browsing this forum: No registered users and 6 guests