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Second gear knock V70-XC70 2000

posted by  someone claiming to be Phileep on  Mon Jan 3 16:55 CST 2005 [RELATED]

I have a V70 T5(old shape) that makes a knocking / thud sound when i first pull away and it changes up to second (automatic). This only happends after starting and not for the rest of the journey. However, once i re-start the car, it re-appears on the first change up again. It is unaffected by wheather conditions and engine temp. Although i'm sure that it is not a problem i would like to know if any one else's car has the same phenomenom and what may be the cause. I have an 850 and it does not happen on that car. Thanks in advance.

Phil








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    Second gear knock V70-XC70 2000

    posted by  someone claiming to be bob on  Tue Jan 4 10:20 CST 2005 [RELATED]

    The nABS system runs a self test after every start, and cycles the pump briefly. It usually occurs around the 1-2 upshift point. I can't remember the exact spec but I think it occurs at 18MPH. It runs this test every time the car is started, only once. Then knock you hear is the pump self test.








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      Second gear knock V70-XC70 2000

      posted by  someone claiming to be Phileep on  Tue Jan 4 21:48 CST 2005 [RELATED]

      Thanks for your replies. Great help!








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    Second gear knock V70-XC70 2000

    posted by  KlausC on  Tue Jan 4 03:18 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    A hard shift is usually an indicator that the tranny needs a flush. Try it and see if it makes a difference.
    Klaus
    --
    98 V70R awd(101Kmi), 95 854T(85K mi), 75 164 (176K mi), 88 245(165K mi)







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