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Transmission shifting problems. 850

posted by  someone claiming to be Matty on  Sun Aug 1 22:44 CST 2004 [RELATED]

Hi all,

I own a 1996 850R Auto with a rica ecu and have recently bee having to problems with the transmission. Within the last 2500 miles i changed my atf using a cheap dexron 3 brand.

The levels seem ok, even tho reading the volvo atf dip stick is hit and miss.The transmission runs fine/ makes no grinding or harsh noises and locks up. The problems is with the shifting. The seem to be much harder than before and when shifting it kicks into gear as opposed to the smooth seamless shift it would do before.

Ive also has instances when coming to a near dead stop then accelerating again, the trans goes into netrual then suddenly slips and clunks into gear. Its seems that the trans is getting confused.

any ideas?

Im gonna go back to using volvo atf, and test the throttle pos sensor.







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    Transmission shifting problems. 850

    posted by  the kick inside on  Fri Aug 6 10:03 CST 2004
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    last visit: Thu May 17 09:58 CST 2007
    [RELATED]

    1. you did sheck the fluid levels with the engine hot (after 30 minute drive) and with the engine running i presume (ok i know you did and its a stupid question...but...)

    2. have you checked the top engine mount (and i mean changed it....) when i did my tranny flush i got harsh changes till i tracked down a shot mount, the old fluid must have had enough 'bounce' in it to 'hide' the mount issue...

    3. Sorry cant help on the other issues but my trans definately never goes iunto neutral by itself...have you tried 'ratchet' cleaning the shifter switch - some say this can help issues like this (also wondering about engine movement from a shot mount under engine breaking being enough to influence something...)

    hope you find a nice easy solution!







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    Transmission shifting problems. 850

    posted by  Moregolf on  Mon Aug 2 00:17 CST 2004
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    last visit: Tue Apr 22 07:55 CST 2008
    [RELATED]

    Any codes? PNP sw needs aligning?








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      Transmission shifting problems. 850

      posted by  someone claiming to be Matty on  Mon Aug 2 00:47 CST 2004 [RELATED]

      No blinking arrow (its does work when in 3rd, so no bad bulb), How do you check for a mis aligned pnp?







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