Results 1 to 3 of 3

Thread: Power Glide jerks`

  1. #1
    Senior Member MASTER BUILDER
    Join Date
    Aug 2007
    Location
    Iowa - USA
    Posts
    218

    Power Glide jerks`

    When I start my race car with a racing powerglide and a trans brake, the car will jerk a few inches. Is this a characteristic of these transmissions or something else.

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    Not normal at all
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  3. #3
    Member MASTER JOURNEYMAN
    Join Date
    Jan 2009
    Posts
    35
    Blog Entries
    1
    jreiley,

    As Hammertime said, "NOT NORMAL" The manual spool in the valve body is not lined up with the detente (notches inside). It could be caused by the shift linkage, (cable) if equipped. When the shifter is in Park or neutral the lever on the transmission must be in the same locations. If you are using and aftermarket shifter, the cable attachment end must be in the proper hole of the transmission shift lever that matches the shifter you are using.

    To test if the cable adjustment is the problem; disconnect the cable from the transmission lever. By hand, put the trans in park. Start car. If it does not jerk you found the problem. To verify that, put the trans in neutral (block wheel) then start car. If there is no jerk, you need to do the cable adjustment.

    If there is still a jerk, first make sure there is nothing interfering with the lever movement. There should be positive smooth movement (by hand) from Park, Reverse, Neutral, Drive, and First. Make sure the lever is solidly attached to the shift arm that goes into the trans. Often a poor connection is found here, from a broken weld or loose nut. If that is OK, then there is a possibility that the inside linkage is loose in the same shaft inside, not allowing the lever to properly align the manual shift spool.

    I believe you are going to find the outside cable needs adjusted.

    But if it still jerks, then oil pressure is going the the band, forward clutch pack, and or reverse clutch pack when it should not. Pressure testing can verify that, and then it may take disassemble to fix the problem. Once you try these fixes, let me know.

    Jack
    Last edited by jtortorete; 03-17-2014 at 09:12 PM.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy