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Rolls Backwards at Idle When Stopped at a Light on Hill

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by backlash, Dec 15, 2000.

  1. backlash

    backlash 1/2 ton status

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    No biggy, but what does it mean when your truck rolls backwards while in gear and on a hill at idle.

    Is it the engine idle too low or somthing in the tranny?

    Mike ... Yes, it's an automatic and yes, it's facing forward.
     
  2. HarryH3

    HarryH3 1 ton status Author

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    It means you don't have your foot on the brake pedal! [​IMG]

    Seriously, an auto tranny is not designed to hold the vehicle in place on a hill. Using the throttle to hold it in place will generate a LOT of heat in the torque converter. Just step on the brake until the light turns green. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  3. militaryblazer

    militaryblazer 1/2 ton status

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    I have a question on my auto trans. Would it be better at a red light to have it in N and have my foot on the brake or have it in Drive and my foot on the brake.

    <font color=orange>'86 Military Blazer with 4" Lift & 33" Tires</font color=orange>[​IMG]
     
  4. HarryH3

    HarryH3 1 ton status Author

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    I just leave 'em in drive with my foot on the brake. If I wanted to shift all the time I'd get a manual tranny. [​IMG] [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  5. fr8train

    fr8train 1/2 ton status

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    So is it bad when your truck actually creeps up the hill? Just kidding mine doesnt move on extreme hills, but moves forward on normal inclines.
     
  6. backlash

    backlash 1/2 ton status

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    Harry,

    Thought about addressing this to you glad you answered!

    For the first 8 years I had this truck it would stay still at a light on a hill ... lately it rolls backwards. As I said no biggy, but curious as to why the change. Still runs very smooth at idle, just a bit low I think.

    Anyway, ain't gonna worry about it. Much more stuff to fix and spend my money on.

    Thanks
     
  7. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    try turning up the idle just a little bit. other than that i would not worry to much

    s.smith 77blazer lookin 4 mud
     
  8. Jackson 88K5

    Jackson 88K5 1/2 ton status

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    Mine started gradually moving backwards on slight inclines about two weeks before the torque converter finally went out. I had to get the whole tranny rebuilt because it sent metal thoughout it [​IMG]. I don't know if it was the cause but I know I had to spend a little money.


    If it breaks, upgade it.
     
  9. Blaze

    Blaze 1/2 ton status

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    Same thing happened to me. Luckily, the flywheel caught most of the torque converter and not the tranny. I was rolling down a hill when mine exploded, so there wasn't too much pressure on it. Ripped the flywheel to shreds, though.

    [​IMG]http://www4.ncsu.edu/~brschoch
     
  10. backlash

    backlash 1/2 ton status

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    Just had mine rebuilt ... may or may not be related. Thought all along that the tranny was the culprit. But, thanks anyway.

    Just thought I'd ask.
     

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