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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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#7 of 70
Re: Lost power [tupin] by mikejl
Oct 04, 2006 (3:58 am)
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Replying to: tupin (Oct 04, 2006 3:16 am)

Electronic accelerator, electronic transmission, etc. My guess is it was an electronic glitch of some sort and I don't know of any way to replicate it. I hope a code shows up when they run diagnostics that will point to a problem, but that's pretty iffy, too.
 
I suspect there is nothing that can be done to fix it unless some additional diagnostic information shows up, but I am nearly at 36,000 miles, so I need to get this registered as a problem before I am out of warranty.
 
I posted here to benefit from any previous experience anyone may have had, but this sounds like a unique problem, at least so far.
 
I will post an update after it's been looked at.
#8 of 70
Re: Lost power [tupin] by aka1
Oct 07, 2006 (7:20 pm)
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Replying to: tupin (Oct 04, 2006 3:16 am)

I've had a transmission fail on me before on my Acura and it was rated for 2000lb's of towing (not that I ever did)- and its not the best thing to fail, considering warranty is usually up by then as well... So, needless to say, my worst fear is STILL that the transmission wasn't designed suitably to handle the weight of my B9.
 
My transmission does shift abruptly when cold and has an occasional "hiccup" around 25mph when decelerating. My opinion is also that the best transmissions are those from GM.
#9 of 70
Re: Lost power [mikejl] by mikejl
Oct 31, 2006 (12:17 pm)
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Replying to: mikejl (Oct 04, 2006 3:58 am)

I did have the car looked at. Whatever the problem was, it left no tracks and it hasn't recurred. If it happens again, I'll post an update.
#10 of 70
Re: Lost power [mikejl] by 1bcpastor
Mar 13, 2007 (10:43 pm)
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Replying to: mikejl (Oct 03, 2006 8:12 am)

We've had similar problems. First occurred Dec 'O6. Total loss of power when I tried to accelerate to pass another vehicle. B9 was bought new and only 8 months old. Called dealer & told me to bring it in. We were out of state for Christmas. Took B9 in the next week. They checked it out, it ran perfect for them and computer showed no codes/errors. I've had a few instances of minor similarities, but not to the extent as the Dec. incident. That is until yesterday (3/12/07). Driving on interstate and went to pass and B9 lost all power. Would not accelerate, tach jumped up to 5000, stuck, and then fell to 2800. (B9 has 18000 miles now). Called dealer and told them I was on my way in and asked to have someone ready to drive my car when I get there. I was able to "milk" the accelerator to get up to speed and "limp" in to the dealer. The manager drove it and it had no power for him either (much to his surprise & mine). From a stop, it would shift out of 1st gear fine, but 2nd gear just fell flat to nothing. At cruising speed, any acceleration to pass would be total loss of power. I have a loaner now while they check mine out. They called today and said the computer shows no errors/codes and everything is fine. But their manager drove the car and experienced for himself exactly what was going on. Of course it will not do it again for the service techs. The service dept. also informed me that there was an update issued for the TPS (Throttle Position Sensor) for the B9 (that was not listed in Dec '06) and that update was applied to my car today. He said there is also an update to eliminate the hard cold shift trouble as well. I asked the when & why for the TPS update. He could not answer but said he would research it. A couple hours later he called back and said he could get papers from the Pentagon easier than trying to figure the when & why for this update. He said he feels confident this should solve our problem (though their computer says my B9 has no problem). I'm leaning toward computer/electrical trouble or transmission personally. I called SOA customer service to inquire. They said "no updates have been issued for the B9." But they would contact the dealer to see which updates were applied and call me back tomorrow. While waiting, I thought I would do my own research to see if my problem has happened to others. We have been very pleased with the B9 except for this power issue. Now it's twice in less than 3 months (less than a year overall). I thought I would see if yours has recurred or others experience anything similar. This may be a one (or 2) in a thousand incident. I will post a response when I hear from SOA. Hope someone can figure this out. Thanks for your post.
#11 of 70
Re: Lost power [1bcpastor] by ateixeira
Mar 15, 2007 (7:07 am)
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Replying to: 1bcpastor (Mar 13, 2007 10:43 pm)

My eyes hurt, can use some paragraphs to make your posts easier to read, please?
 
Good luck and hope they resolve this quickly.
 
-juice
#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.

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