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Thread: shifting into first while still moving in a car is bad for it?

  1. #1
    Biker clevermetal's Avatar
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    shifting into first while still moving in a car is bad for it?

    so i took my mums car in for her to get it serviced. I asked the guy to have a look at the transmission oil because some of the shifts weren't as smooth as they should have been, particularly when shifting back to first (obviously at a slow speed that the car could easily do in first gear)

    He then goes on to tell me that this is bad for a cars gearbox and that i shouldn't do it
    my question is why!!?? Surely first gear is just like any of the other gears? Its not like im trying to shift into first while doing ninety.
    \'Speed bump\'? I think you mean \'ramp\'

  2. #2
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    RE: shifting into first while still moving in a car is bad for it?

    You should shift into first only if you've come to a standstill or about there

    PS - who drives manual anymore... auto ftw !!

    ;-)

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    Ace banana.logic's Avatar
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    RE: shifting into first while still moving in a car is bad for it?

    it will go in easy if you rev match.

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    Ace Wally's Avatar
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    RE: shifting into first while still moving in a car is bad for it?

    I wouldn't have thought it would matter. I do it all the time. Surely if it's bad for it, it will crunch, but 1st gear has syncro (is that the right term) like all the other gears so as long as you aren't trying to force it in at high RPM .. it would be all good?

    Yes .. that was more of a question than a statement :P

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    RE: shifting into first while still moving in a car is bad for it?

    i think i read somewhere that some gearboxs don't have syncro on first. I know they don't have it in reverse though.

    +1 to rev match. just be careful though as there is more torque involved in the lower ratio gears, thus easier to damage when you force it.

  6. #6
    Biker cbrrrz's Avatar
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    RE: shifting into first while still moving in a car is bad for it?

    1st gear usually has a "lock" on it so you cant engage 1st unless the car is doing a slow enough speed that it wont blow your box.

  7. #7
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    RE: shifting into first while still moving in a car is bad for it?

    99% of car gearboxes nowadays have synchros for all gears (even reverse for a lot of them). part of the synchro mechanism is a lockout that prevents the gears changing whilst moving at different speeds (crunch time)

    believe me, you'd know if it didnt have synchros for a certain gear - you wouldnt be able to change without luck or double clutching it.

    keep doing it. they are made to change gears (durrr) and the synchros are there to make gear changes possible whenever you want them.

  8. #8
    Ace Merudo's Avatar
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    RE: shifting into first while still moving in a car is bad for it?

    also depends on the car big time.

  9. #9
    Biker BriZer's Avatar
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    RE: shifting into first while still moving in a car is bad for it?

    Does anyone know some facts on this though?

    I use to always change to first at low speeds in case of stopping etc. But I got told the same thing... Its a no-no unless completely stopped! (At the time it was explained but I don't think I was listening)

    Been trying to change my bad habits since but it's taking me a while...

    Anyone?

  10. #10
    Ace
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    RE: shifting into first while still moving in a car is bad for it?

    I was once told this when I was a wee lad as well. It doesn't really stop me though as it's just an automatic thing when travelling supeslow behind some grandma on pension day at the RSL.

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