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Harsh gearchanges when cold

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by alexanderfoti, Mar 20, 2017.

  1. alexanderfoti

    alexanderfoti Moderator

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    Hi all

    My S65 has an odd quirk when cold.

    It will do the 1-2 change very harshly when cold and very light throttle applications. Best way to describe it is when driving a manual car, and lifting the clutch up too quickly.

    It disappears very quickly, 5 minutes or so and then its the same as any other 722.6.

    Its just had a new oil + filters, no change. Its also worse when its very cold outside.

    Ideas?
     
  2. om613

    om613 Senior Member

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  3. OP
    alexanderfoti

    alexanderfoti Moderator

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    Thanks, good document that!

    No codes logged or any info otherwise.

    I suspect the TC lockup solenoid is sticking in its bores when cold, based on how it feels when cold, this is the most likely scenario.
     
  4. malcolm210

    malcolm210 Senior Member

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    My 210 box is not the smoothest from 1st to 2nd and always has been like that,
    this doesn't bother me as I never use the 'sport' setting so the box never uses 1st gear, all other changes through the box are virtually imperceptible
     
  5. OP
    alexanderfoti

    alexanderfoti Moderator

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    Indeed, they do seem to vary.

    This one is spot on when warm though. It does seem to have a reluctance to kick down but I think its the engine type.
     
  6. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    7G's are infamously snatchy when cold. Best to rest the adaptations and go through the gear shift process with the STAR machine.
     
  7. OP
    alexanderfoti

    alexanderfoti Moderator

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    5g on this (being a 65)
     
  8. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    Of course.

    Still reset the adaptations and do check the TC lock up valve!
     
  9. OP
    alexanderfoti

    alexanderfoti Moderator

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    Will do!!!
     
  10. Frontstep

    Frontstep Senior Member

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    Or summer :)
     

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