SP "free wheels" off throttle

Discussion in 'The "Juice Box"' started by GS-XNR, Jul 17, 2006.

  1. GS-XNR

    GS-XNR Well-Known Member

    I just got my 67 on the road after a complete restoration. I'm slowly working bugs out. Here's one to ponder. When I take my foot off the throttle to idle position at speed, say 40MPH, my transmission seems to disengage and free wheels. When I give it some throttle it engages again. This can't be right! What do I need to check for this "problem". The transmission shifts just fine and otherwise operates properly.
    Thanks!
    Harvey
     
  2. gusszgs

    gusszgs Well-Known Member

    Has there been any mods to the tranny? Spragg, manual Valve body ect..
     
  3. DaWildcat

    DaWildcat Platinum Level Contributor

    I'm guessing it's an issue with the front (intermediate) band or circuit. Could be as assembly issue, worn band, stuck/leaking servo or accumulator. Has this thing been apart recently?

    Devon
     
  4. frtlnrbuick

    frtlnrbuick Midwest Mafia

    Kick down

    Have you checked the kick down circuit?

    See if the switch is sticking, or just pull the wire at the case. It could be inside the trans, but, check the easy stuff first.

    Jim
     
  5. GS-XNR

    GS-XNR Well-Known Member

    Hi,
    The trans was rebuilt by a very knowledgeable individual. It has about 10 miles on it. It had a shift kit installed, other than that it is basically stock.
    I think I will start by disconnecting the wire from switch on the throttle rod to see if that helps. I understand that controls the vanes on the converter.
    I'll let you know what happens.
    Thanks
    Harvey
     
  6. DaWildcat

    DaWildcat Platinum Level Contributor

    If that doesn't do it, time to go right back to the rebuilder.

    Devon
     

Share This Page