LRG and Mark Thanks for the info and threads. LRG - when your valve clicks - any sudden drop off of vac? Did you check your white (bleed) valve on IP? What did it show? Thanks

With Blue/Black striped line on the switch on the left front fender the vac didn't drop, rather went up FAST as soon as the engine came off idle. When the switch clicks, the vac on that line goes from 0" to 22" in about 2-3 seconds. There was no drop in vac at all until the revs dropped back to idle, then the switched clicked and the vac quickly dropped back to zero.

On the round, blue amplifier there was a vac drop but as previously described it was a linear drop from 17+" at idle to about 13.5" as revs increased to fairly high RPMs. I didn't check the IP bleed. I'm not sure why it would be a factor since the line to the tranny seems to run directly from the the blue amplifier. My main vac source to the amplifier (line is clear/blue stripe) seems to maintain a steady 14" regardless of RPM.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold