Vibtation or shutter on acceleration on Subaru Tribeca

Problem Description and Possible Solution

A vibration or shutter may be noted on acceleration. If the transmission torque converter is suspected a revised part is available to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 86,796 (30,000–146,000)
2 model years affected: 2008, 2009
32 people reported this problem
Viewing 1 - 18 of 18 comments
haven' t fixed it yet, looking for solutions.
sounds briefly like you are going over a washboard road while accelerating.
Car shakes while accelerating slowly. To stop the shaking you must either back off the accelerator or speed up your acceleration
I noticed this problem within the last month, but only just brought it in to the dealership. This has happened intermittently since I've owned the car and each time I was told that it was just a "software update" that had to be done. Today they called and said that I needed a whole new transmission to the tune of $6225! Still looking for answers....
Have had two torque converter replacements. We now have a confirmed third time problem of the same. We need three rows and love owning a Subaru but this is too much. It's making for a stressful ownership of this vehicle having the repeat issue, we just want it fixed so we can enjoy our Subaru!
Same shudder at different speeds. They want 6K to replace tranny. Trading it in on a Honda before it gets worse.
Happens with a CEL thrown about either AT OIL temp or some other issue. It could be the TCU or the ECU, not sure, willing to find out.
[Added note: the second time the dealer said there was a remapping program for the transmission. Apparently, that's not enough.]

My Tribeca was bought from a reputable Subie dealer just after they got it from Subaru USA as a company car. Totally maintained and such. At first it was an occasional shudder/vibration you could feel in the seat of your pants. I used to have a shop and know the first thing is tire balance, etc. Then a new set of wheels/tires for winter just after purchase, and the problem didn't go away. She now has 61K miles and it's getting worse. I've mentioned this to the dealership twice since. (I have a lifetime powertrain warranty.) I had thought maybe there's a u-joint or differential problem. But, that didn't explain that it was consistent under light acceleration/ light load that didn't coincide with either road speed or engine speed. Torque converter problems could easily explain this. Guess whom I'm calling in the morning.... Thanks all. Sometimes it's right under your nose and you can't smell it until someone else says: "What? You can't smell that skunk!" I've owned about six Subies (in addition to four Hondas, four Toyotas, three BMWs) and I'll take a Subie over any.

Thanks all for this info/perspective. :)
Vehicle begins wobble at 90km/hr which worsens with greater acceleration. Originating from powertrain, or Torque Converter.
shudder/vibration throughout car at 40 mph and 60 mph speeds.seen numerous complaints about this issue.torque converter problem to blame
2008 Subaru Tribeca Transmission Shutter - FIXED
I have an 08 Tribeca that started this shutter shortly after the fluid in the transmission was changed. I was told it was the torque converter, the transmission, etc.. I had changed the oil again and still the same shutter when accelerating into third gear.
I could not nor would concede to a transmission replacement or that of the torque converter since it ran fine and no codes in the computer accept for this third gear issue.

Found this product at my local O'Reilys auto part store and $10 later, it was fixed. Shutter Fix. That's the name of the product. Comes in a 2 oz tube. I used one and experienced a big difference, yet still a little shutter, so i purchased another bottle, this time on line (ebay) for $6 with shipping. and wala, Shutter no more.

Man to think of all the $$$ i could have spent chasing all these false diagnosis. Give it a try, you cant go wrong, well worth the investment. I swear by it. If it works, feel free to send any donations my way. The tip is invaluable for sure.

BE well,