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Subaru B9 Tribeca Transmisson Issues

70 messages,  Last post on Nov 18, 2009 at 4:20 PM

You are in the Subaru B9 Tribeca Maintenance & Repair Forum. Your Host is kcram

What is this discussion about? Subaru B9 Tribeca, Transmission, SUV


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#12 of 70
Re: Lost power [1bcpastor] by 1bcpastor
Mar 19, 2007 (7:51 am)
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Replying to: 1bcpastor (Mar 13, 2007 10:43 pm)

Just a brief update on our situation. The B9 spent all last week in the shop. They were unable to duplicate the problem. The computer shows no codes/errors. And the problem is still unfounded.
 
Two updates were applied to the ECU, which the dealer and SOA say might help the problem or might not. Since the problem is not showing on the computer, there is no way to know for certain if this is the solution. Their suggestion is to drive the vehicle again and see if the problem is in fact solved by these updates.
 
I have the car now and will drive it for a couple days to see if there is any difference. Overall the car is great & my wife loves it. I feel the problem is still computer related and no way discourages us from future Subaru vehicles. I think we just have one that "stumps" them all.
 
We would highly recommend the vehicle to anyone. Safety features, handling, and overall appearance of the B9 are great! Subaru (dealer & SOA) is working with us very well to correct the problem.
#13 of 70
CODES! by ixxi
Jul 23, 2007 (8:13 am)
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I've had these same power/shifting issues and have been waiting for some new codes to comes out... sounds like they might have. I'm due to bring my Beca in for service in another month or so; wondering if you could share the technical terms/numbers for the codes so I can ask about them intelligently at the dealer? Plus, have you noticed any smoother performance with them?
#14 of 70
Re: CODES! [ixxi] by 1bcpastor
Jul 23, 2007 (7:11 pm)
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Replying to: ixxi (Jul 23, 2007 8:13 am)

We finally made some progress. Turns out the tranny is fine. It was determined by the dealer that the engine was misfiring on all cylinders due to a fuel problem. The fuel filter, tank and sending unit were clogged up. The tank was removed and cleaned, new pump, filter, and sending unit. All seems to be running great again. Oh yeah, this is NOT covered under warranty--even though it is 1 year old and 20,000 miles.
#15 of 70
Re: CODES! [1bcpastor] by xwesx
Jul 24, 2007 (8:57 am)
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Replying to: 1bcpastor (Jul 23, 2007 7:11 pm)

If it was caused by the fuel itself, then I would agree it should not be covered under warranty. If you can determine where the fuel was purchased (and have proof of that), it might be worth seeking resolution through that party. Your vehicle surely was not the only one affected if that were the case.
#16 of 70
B9 Tribeca transmission problems by desertrat3
Aug 02, 2007 (11:54 am)
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My 06 Tribeca has 8,700 miles. Bought in Sept. of 05, we began complaining to the selling dealership about what we described as a hesitation when turning corners, merging onto freeways. Dealership took a look and told us they could not find any problem.
 
After numerous complaints to same dealership, the service manager admitted Subaru knew they had a problem with this car but could not come up with a fix. The computer has been "flashed" but to no avail. I consider this a safety issue and have informed Subaru that I will file a complaint with NTSB.
 
I am not in negotiations with Subaru to replace this car with a 2008 but their offer is several thousands of dollars off anytime I can afford.
 
Has anyone else out there come across the same problem? Has anyone else out there dealt with Subaru yet?
 
Any info would be greatly appreciated.
#17 of 70
B9 Tribeca transmission problems by desertrat3
Aug 02, 2007 (11:56 am)
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I am sorry. I did not proof read my last message. I am in negoations with Subaru for replacement.
#18 of 70
Re: B9 Tribeca transmission problems [desertrat3] by ateixeira
Aug 02, 2007 (5:04 pm)
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Replying to: desertrat3 (Aug 02, 2007 11:56 am)

Hang in there, be patient and polite. I used to work for a Help Desk and trust me, the nice ones got the best service. Trust me.
 
Any how, good luck and let them know the Edmunds.com community is eagerly awaiting to hear about a resolution, that should help.
 
Be nice!
#19 of 70
Re: Lost power [mikejl] by mikejl
Sep 11, 2007 (7:25 am)
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Replying to: mikejl (Oct 31, 2006 12:17 pm)

It has been a while, but I just had another episode, similar to the first. Highway driving, 70-75 mph, the car suddenly started slowing down and did not respond to any attempt to accelerate.
 
I again worked my way off the road and put the transmission in Park. I then put it back in gear and drove off with no problem.
 
This time, I was more observant and I have a feeling both episodes were caused by a nearly-empty gas tank.
 
On this new occurrence, my low gas indicator was definitely on. I am pretty sure the indicator was on when it happened before, too. I did not run out of gas either time - I have never put more than 14 gallons in, ever - but I just have this feeling that the computer chip in the car may have gotten some signal that we had, indeed, done just that.
 
That would explain why there was no response from the accelerator. Stopping the car from highway speed may have moved the gas around in the tank enough to reset any switch or indicator that had signaled an empty tank.
 
This is just a theory, but I think I'm going to try to stop for gas sooner when I'm on a trip from now on, just in case.
 
BTW - I have 61,500 miles on my Tribeca now and I still love the car.
#20 of 70
Re: Lost power [mikejl] by ateixeira
Sep 11, 2007 (12:57 pm)
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Replying to: mikejl (Sep 11, 2007 7:25 am)

That's a lot of miles!
 
Maybe there isn't much of a baffle in the fuel tank so the gas sloshes around, starving the fuel pump temporarily.
 
I'd fill up sooner, too, because you can overheat the fuel pump if it runs dry for too long.
#21 of 70
Re: Lost power [ateixeira] by mikejl
Sep 12, 2007 (4:42 am)
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Replying to: ateixeira (Sep 11, 2007 12:57 pm)

I don't think there is much chance of the fuel pump running dry with 2.5 gallons (or more) in the tank, although that is something to think about. I think the problem may be with the sending unit or some other sensor that 'reads' the fuel level. I believe it cuts off the fuel pump prematurely based on an incorrect reading.
 
If this is what is happening, then keeping more fuel in the tank should prevent any further occurrences. Time will tell.

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