Greetings...

This past weekend, I decided to dive in under my dash to investigate a bit. I repaired my in-car temp sensor, whose hose had deteriorated. In the process of "messing around" I noticed my aux fan was not running when the a/c was switched on and pumping out cold air. After checking all fuses, etc I discovered if I shorted the wires on the red switch on the receiver/drier, the fan would run (the '88 uses a pressure switch on the receiver/drier to activate the k10 relay for low-speed aux fan). My question is... Can the switch be replaced without evacuating the system? Appearances are it cannot, but looks can be deceiving.

Any ideas?

'Gonna tackle this before I head back under dash to investigate air door operation (fresh/recirc not working presently).

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

no it can't. that switch is set off by high pressure.
if yer pressures are not getting high enough then the fan won't
go on.

george