Quote:
Originally Posted by Aees
After some research i found out what the "thing" was. It is the Air Supply Valve. Does anyone with power steering have experience with this removed?
|
I do. As long as you still have a functioning BAC valve (= Bypass Air Control valve, that's the one that tweaks idle speed to deal with engine loads), you won't miss the ASV. The ASV is just a on/off solenoid valve that works in parallel with the BAC to allow a little more air past the throttle plates briefly when the A/C clutch kicks on or when you cut the steering wheel to full lock with PS.
In my case, the ASV is still physically installed on the car, but the electrical connector is broken so it's non-functioning. When it fails like that, the valve stays closed (no extra air). My car is a US market '89 turbo.
As for that other thing with the 2 vacuum nipples, I'm not sure what that is. If memory serves, the fuel pressure regulator (FPR) only has 1 vacuum nipple on the US spec S5 turbos. "49 state" US spec S5 turbos don't have EGR, so I can't comment on that.