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Automatic Transmission 900 1995

posted by  Maxspeed on  Wed Apr 11 23:11 CST 2018
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last visit: Mon Jan 20 21:55 CST 2014
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Hi all, A question on the difference if any between a turbo and non-turbo AW-71 transmission. I need to replace my transmission in my 1995 940 Turbo and before I order one I want to know if there is a difference in the trannys. A lot of sites that sell used and rebuilt AW-71's will list them as Turbo and Non-Turbo, Is there really a difference or is this just something they ask? Thanks for your help, Max.








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    Automatic Transmission 900 1995

    posted by  spook on  Thu Apr 12 06:44 CST 2018
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    last visit: Fri Oct 24 08:06 CST 2014
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    Dear Maxspeed,

    Hope you're well. The key difference between Aisin-Warner (AW) transmissions installed in non-turbo and turbo cars has to do with the torque converter. In non-turbo cars, the torque converter has a "lock-uP" feature, which activates at/about 48 miles/hour. This improves fuel efficiency. AW transmissions installed in cars with turbo-equipped engines, do not have locking torque converters.

    AW trannies with the locking torque converter have an "L" after the model designation, e.g., AW71L.

    The Volvo Pocket data booklet - Cars (700,850,900) 1991-1996, p. 100, shows there's a 6mm (1/4") difference in the diamenters of the locking and non-locking torque converters. I'd infer from this difference that these units do not interchange.

    Rarely on this board is transmission replacement discussed. In most cases, a flush - replacement of the automatic transmission fluid (ATF) - restores the tranny to smooth operation.

    Hope this helps.

    Yours faithfully,

    Spook







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