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transmission funkiness S40-V40 2001

posted by  karljr on  Wed Jul 23 05:17 CST 2003
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I have an '01 S40 with about 16,000 miles. I've had a funky transmission problem since virtually day 1. I see references to similar problems but I see no solutions posted. The problem is quite unpredictable, but it seems to be related to the adaptive part of the transmission and quick stops or possible stop-and-go traffic. When coming to a stop, the transmission seems to suddenly shift from 3rd to 1st....or something like that. There is a major audible clunk. Then the whole car jerks. It happens fairly regularly.....but not predictably. Seems like after a quick/short stop, this phenomenon will occur shortly thereafter. The dealer has given me the "there are no codes stored" story every time. They also say it's at factory specs.
I also have experienced this "sudden neutral" problem, where when accelerating,
there is a momentary period where the transmission appears to be in "N".

However, the sudden HARD downshift has happened far more often and is far more troublesome to me.....especially since the dealer appears to have no clue whatsoever. And since there seems to be NO WAY that this could possibly be anything but damaging to the transmission.

Anybody have any comments/ideas/solutions?

Thanks.








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    Tapping in to OEM subwoofer or rear speakers for trigger S40-V40 2001

    posted by  Redbrick on  Thu Jul 24 03:55 CST 2003
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    Sounds pretty much like what I experienced with my '03 V40. Someone here gave me the heads up on a software down load to the car that Volvo had put out to correct the problem. The dealership didn't know anything about it until I came in the with the following information:

    TNN43-36-2003-01-28

    That number will help them retrieve the software program needed for your car. If you want to go to the site where all this kind of stuff is listed here is the location too:

    http://www.volvotechinfo.com/index.cfm?fuseaction=search.main

    You will have to do a search by listing the model and year of your's and entering the search word "transmission".

    This should do the trick....if it doesn't, let us know.








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    transmission funkiness S40-V40 2001

    posted by  someone claiming to be NJonEr on  Wed Jul 23 11:05 CST 2003 [RELATED]

    I had this problem. They loaded new Software into the "brain" at my last oil change and the problem seamed to go away...








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    transmission funkiness S40-V40 2001

    posted by  W1ZN on  Wed Jul 23 09:15 CST 2003
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    My good friend has a 01 S40 that had a transmission problem. Some hesitation in 3rd gear. The dealer just replaced transmission under warranty. They claim its the first one they have had to swap out. This happened around 40K miles.







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      transmission funkiness S40-V40 2001

      posted by  Redbrick on  Thu Jul 24 04:01 CST 2003
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

      Sounds pretty much like what I experienced with my '03 V40. Someone here gave me the heads up on a software down load to the car that Volvo had put out to correct the problem. The dealership didn't know anything about it until I came in the with the following information:

      TNN43-36-2003-01-28

      That number will help them retrieve the software program needed for your car. If you want to go to the site where all this kind of stuff is listed here is the location too:

      http://www.volvotechinfo.com/index.cfm?fuseaction=search.main

      You will have to do a search by listing the model and year of your's and entering the search word "transmission".

      This should do the trick....if it doesn't, let us know.








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        transmission funkiness S40-V40 2001

        posted by  karljr on  Fri Aug 8 02:54 CST 2003
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        The software upgrade as outlined in that Volvo tech bulletin seems to have been the silver bullet. Actually, when they got in there to do the upgrade, they found that the transmission "brain" was a whole lot dumber than they expected. It would NOT accept the new software download at all. Volvo had them replace the entire controller.

        It's only been since Monday (Aug 4).....less than a week, but the transmission definitely seems smoother. And there hasn't even been a hint of a "CLUNK".

        So, I think this fix is gonna work.....well, at least I hope it's gonna work.

        And YES!!...likewise my dealer was unaware of this tech bulletin until I walked in there with it.

        Thanks for the tip.....much appreciated.

        BTW, I recently ran into another '01 S40 owner and she claims to have experienced NONE of this behavior......which, as far as I'm concerned, is mighty interesting all on its own.








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          transmission funkiness S40-V40 2001

          posted by  someone claiming to be Eric on  Fri Aug 22 13:33 CST 2003 [RELATED]

          And I thought I was the only one. Thanks for posting this info, my dealer has no clue.







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