<VV> First extended drive (addendum)
James Davis
jld at wk.net
Fri Jul 6 12:40:47 EDT 2007
Could be several causes. Most likely is a improperly adjusted TV rod
or the idle speed too high. The low band could be improperly
adjusted. There could be a leak in the vacuum line to the modulator
or a bad modulator diaphragm. The vacuum modulator valve could be
sticking . If the Powerglide has been rebuilt someone could have
left out or installed the down-shift timing valve,
upside-down. Lastly, sticking valves in the valve body could cause
harsh closed throttle downshifts .
Jim Davis
At 08:41 AM 7/6/2007, Stephen Upham wrote:
>Oh, I forgot one thing. As I come to a stop, the PG downshifts like
>a horse is kicking the back of the car, but not every time (70% of
>the time?). Ideas?
>
>
>Stephen Upham
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