I've gone over the entire system with a fine tooth comb; still stumped. When I got the car it had a bad servo, amplifier and aux. pump. Chg'd all parts. I've checked all the sensors and the adj. dial pot. All within proper ranges. I even tried hooking up other amplifiers & servos. When ign. switch is turned on the servo drives what sounds like fully in "some" direction. The adjustment dial has NO impact in the servo positioning. Pretty cold here, sure could use some advice on this problem!!
PS- Yes I did search & didn't find anything that helps beyond what I've already tried. I'm running out of hair for pulling it out!!!