One of them is wired the switch on the Power Steering pressure hose and
the other is connected to the AC compressor clutch. When powered, they
bypass the throttle to increase the idle speed to keep it from stalling
when the AC is turned on or the power steering is highly loaded.

Dennis.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of David Gunning
Sent: Friday, May 19, 2006 6:01 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Mysterious Air Control Valves, 1985-1.9L

There are two air (vacuum?) control valves on the 85 1.9L nestled way up
in the uppermost right hand corner of the engine compartment and which
connects to the air filter housing via a hose gizmo.  Wondering if
someone can tell me where the two wires that power this device are
suppose to be connected to?  Can't find any reference in Bentley or
Haynes manuals.  What these air or vacuum valves actually do remains a
mystery to me.  Mine were disconnected by the previous owner and it
might be fun hook 'em up to see how their functioning  might effect the
overall running of the engine.  Might help improve gas milage, if they
were properly connected?  Who knows?  Anything that might help improve
beastly gas milage is certainly worth a try.

Dave

davidgunning@pivot.net