TH350 Vacuum Modulator Problems?

Discussion in 'The "Juice Box"' started by 71skylark3504v, Apr 17, 2007.

  1. 71skylark3504v

    71skylark3504v Goin' Fast In Luxury!

    My transmission is been acting funny. It no longer has a sense of engine load so when I'm cruising on the highway then floor it the transmission won't down shift:confused:. I recently upgraded to a 4 barrel manifold a couple days ago and I have inspected all vacuum lines and they appear fine.

    If this the modulator, could someone tell how to correctly replace it?

    Thanks
     
    71skylark3504v, Apr 17, 2007
    #1
  2. SS-TRUCK

    SS-TRUCK Stage 1 X

    Did the problem start when you changed carburetors ? If so you robably have the kickdown cable out of adjustment .
     
    SS-TRUCK, Apr 17, 2007
    #2
  3. 71skylark3504v

    71skylark3504v Goin' Fast In Luxury!

    Acually yes, I didn't know it had a kickdown cable. How do you adjust?
     
    71skylark3504v, Apr 18, 2007
    #3
  4. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Make sure the cable hasn't snapped. It attaches to the gas pedal below the throttle cable. There is a clip on a rod passing through the gas pedal linkage. You slide the clip towards the gas pedal and slowly floor the pedal (engine off). It self adjusts. The idea is for the cable to reach the end of it's travel at full throttle.

    http://www.v8buick.com/attachment.php?attachmentid=32477&d=1095722932

    http://www.v8buick.com/showthread.php?t=55558
     
    LARRY70GS, Apr 18, 2007
    #4

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