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Hi all! Just bought a 2006 OBXT MT with 97,000 miles on it now - been dropping serious coin since I got it - 2 rear bearings, One new axel (the other side was done just prior to me buying the car), timing belt, tensioners, thermostat, coolant, plugs, dif oil, pulled the banjo bolt and replaced it with IPT bypass, air filter --- and now when I am accelerating moderately hard through the first 4 gears there is an audible thumping sound coming up through the floor boards. If I short shift or am driving gently, there is no sound/thumping at all. My mechanic says that I am going to need a new or re-built tranny for only $1,700.00 on top of the $2,000 I have already paid for the above work.

Anyone else experience this sound/thumping? Also, the car seems to shift more smoothly just after starting when the tranny is cold - once the car has been driven for 20+ minutes the shifting gets a little stiffer (at least that's what it seems like)

Help me oh gurus of the Subaru...
 

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Some of what you listed might be needed by any used car with 97000 miles on it.

Consider getting a second opinion before dropping that kinda money on a transmission - could be bushings or a mount or a drive shaft problem.... needs better diagnosis than "need a new or re-built tranny"

maybe someone here can recommend a mechanic near Sutton.
 

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Some of what you listed might be needed by any used car with 97000 miles on it.

Consider getting a second opinion before dropping that kinda money on a transmission - could be bushings or a mount or a drive shaft problem.... needs better diagnosis than "need a new or re-built tranny"
Agree 100%. Apart from the transmission diagnosis, it's all about right for a 100k XT.
 

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Sounds like a possible driveshaft.... In my 02 LGT 5spd wagon, that noise ended up being a bad center diff. PO ran different size tires front and rear which caused the issue. THats what I get for buying a car sight unseen on eBay. I would get a second opinion before getting a new trans. The other stuff is just normal wear and tear stuff. All that is in my future as well (91k miles on an 05 XT)
 

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Discussion Starter #5
OBXT 5mt Tranny

Thanks for the feedback! Yeah, I knew getting into a car at 100K I would need to do the routine maintenance, and then reading about the "normal" problems associated with this model I new that bearings and CV's would probably need to be done too. Just when I thought I could really start driving and enjoying the addictive nature of the turbo, another problem arises.

I had a Subaru specialist take care of all the routine stuff and the Infamous Performance Tuning Oil Filter/bypass and I will go back to my normal mechanic whom I trust to diagnose the thump - hopefully not the tranny and something a bit less costly. Robe30 - do you remember what the center diff service cost? Just want an idea when I go to see my guy.

This is my first used car that was not purchased from someone I know so I have no idea how the first 2 owners maintained her. She looks great so hopefully she was maintained well too. Only time will tell...I'll be putting at least 100K more on her as I drive 30K miles a year.

It's my third subie (98 Legacy GTW, 01 OBW, and then this 06 OBXT)
 

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When I had my diff replaced, it cost around $1400-$1500. The parts alone cost close to $600 from the dealer. The initial estimate was cheaper because the newer ones (mines an 02) are cheaper (per the mechanic who I trust) than the older ones. This also included installing a new slave cylinder (I provided the part), fresh synthetic gear oil, new Group N trans mount and rebuilding of all shifter bushings. The end result was awesome. It feels like a new car, the shifting is smooth and the shifter is nice and tight! About a month later, he did the headgaskets (pulled the engine, ALL gaskets and seals were replaced, new water pump, timing belt, clutch, lightweigh pully, headers and while he was fixing the engine, I welded up a stainless exhaust terminating to a STi rear section) which ended up costing around $1700 for everything. I a little short on cash now but the car is happy and I've put about 6,000 miles on it since end of June and couldn't be happier.

Moral of my story is to find a mechanic that loves and appreciates Subarus. Had I gone to the dealer, this would've been far more expensive.

Good luck w/ your quest for a happy Subaru!
 

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Where were the rear bearing replaced? Hate to tell you this, but Subaru extended the warranty to 100,000 miles on the rear bearings. Dealer would have done it free of charge.

Hey st3mpy, is there a list that outlines everything that is covered on our cars past the regular warranty? Especially, things that have been extended and thus could not be found in the owner's manual, like the bearings you mentioned...
 

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Where were the rear bearing replaced? Hate to tell you this, but Subaru extended the warranty to 100,000 miles on the rear bearings. Dealer would have done it free of charge.
He may be able to get reimburst from SOA if he has documentaion. Jewbaru, you need to contact SOA to see if its possible.
 

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Hey st3mpy, is there a list that outlines everything that is covered on our cars past the regular warranty? Especially, things that have been extended and thus could not be found in the owner's manual, like the bearings you mentioned...
Not that I know of. Hopefully someone more knowledgeable than I can chime in and list them out. I just happen to know about the bearings from reading threads here.
 

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Hey st3mpy, is there a list that outlines everything that is covered on our cars past the regular warranty? Especially, things that have been extended and thus could not be found in the owner's manual, like the bearings you mentioned...
The extended warranty on the rear bearings of a limited list of 2005 and 2005 Legacy's and Outback's was contained in a Technical Service Bulletin (TSB) issued in 2008, and owners of affected cars were notified by letter (if they were registered with SOA). Details are in TSB 03-58-08. I think it's posted here somewhere.

Warranty extensions are sometimes included with TSBs, but the vast majority of TSBs do not involve extensions; they are just instructions to dealers on how to deal with a particular issue. For the list of TSBs that might apply to your car, go to Subaru Technical Information System - Welcome. A subscription is required to read the text of the TSB's but you might find some are available here, or on other web-sites.
 

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It sounds to me like a driveshaft center support bearing or there may be a rubber bushing somewhere worn out - rear diff or transmission?

I haven't owned a Subie yet, so I'm just spitballing, but I doubt your transmission is bad based on your description. Think about it, when you apply torque, that's when you hear the noise. It occurs in the lower gears because the gearing advantage is much better. I would take the car somewhere else, or better yet, try to get under it yourself and look at the rear diff bushings and center support bearing (which I believe is non-serviceable).
 
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