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Re: Proportioning valve problem?
***Here's an update. I think the pressure differential valve is actually centered. Turns out the switch I bought 1-2 years ago has a hair trigger and moves only .030" or so before it closes. So, even on my new aftermarket prop valve, as soon as I install the switch, it closes. The switch that came with the new valve moves more like a .100" before it closes.
However, that doesn't solve my problem. Now I think I may have a blockage somewhere instead of a stuck pressure differential valve. It is this valve that blocks fluid flow, right?
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
Last edited by MikeB; 02-21-2024 at 06:32 PM.
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