A/C and relays - Third Generation F-Body Message Boards

draco · 06-15-2008, 05:48 PM

Trying to fix the A/C in my car

1991 Camaro RS 3.1l

Problem:

When I turn on the A/C my radiator fan does not engage.

I've installed a new a/c and heating control unit (the box with the switches for the temperature control and the blower fan control).

I've found three relays on the firewall, and I have ran their numbers through my works computer. They all three come back as "a/c relays" but I am fairly sure that one is specifically for controlling the fan. Can someone tell me which relay should be the one controlling the fan?

Thanks!

BigBadLou · 06-15-2008, 07:45 PM

Quote:

Originally Posted by draco

Can someone tell me which relay should be the one controlling the fan?

The one with the THICK black/red wire coming out of it.

This troubleshooting guide might also help.
http://www.austinthirdgen.org/index.php?pid=36

Lou