I recently rebuilt my first 200-4r transmission. I put approximately 100 miles on the transmission and everything worked just fine. I took the car on a 160 mile trip through the country. It shifted fine the whole way except I did notice the last stop I made before it stopped down shifting it made a funny sounding click when I put it in park. Every since then it has not been downshifting when I come to a stop. Trans is from a 87 Monte Carlo SS (CZ) with a Transgo HD2 shift kit, all hardened internals, D5 torque converter, xtra wide band, Alto read eagle clutches, extra 4th gear clutch, Mobil 1 synethic transmission fluid, and roller bearing kit. The transmission will start out in first and shift just fine if you shift to neutral at a stop sign. Any suggestions will be appreciated.

 

Could be a linkage issue. Worth verifying anyway.

 

have you been able to figure it out?

 

Seems it was a combination of things. A spring in the valve body was too stiff. I also noticed that if the idle is to high it will not down shift to first. Thanks for the input.

 

TV Cable adjustment is the culprit of most transmission shifting problems.
Verify your pressures by adjusting it at idle and WOT.

Chris @ CK performance is the man on the Turbo Buick forums for this trans.

That's who I am sourcing my parts from.
I've purchased a Stage II 700R4 from him before.
FYI too, he sells a 200 page 2004R booklet for performance mods with TONs of pics.
It's being reprinted this week with new additions.