C3 Corvette Forum
http://corvettec3.com/cgi-bin/yabb2/YaBB.pl
Tech/Performance/Info >> Electrical Issues >> '81 fan blower not working in ac
http://corvettec3.com/cgi-bin/yabb2/YaBB.pl?num=1561666874

Message started by just an old bus motor on Jun 27th, 2019 at 1:03pm

Title: '81 fan blower not working in ac
Post by just an old bus motor on Jun 27th, 2019 at 1:03pm
I replaced the fan switch, heater/ac controller, fan relay, and the resistor. At 1st I had all fan speeds but high. I found a ground issue with the relay so I jumped a temporary ground wire to the block. I now have all fan speeds (including high) until I move the lever to ac. The clutch is engaging but I lose the fan speeds except low speed that is always on. When I check current at the switch, brown is hot, yellow is hot when the lever is on the heat side but not when on the ac side. Both of the light green wires have current in ac mode. Maybe a bad (new) switch? Need input! Thx

Title: Re: '81 fan blower not working in ac
Post by just an old bus motor on Jun 29th, 2019 at 5:28pm
It was a bad (new) switch. Re-installed the old one and works fine.

C3 Corvette Forum » Powered by YaBB 2.5 AE!
YaBB Forum Software © 2000-2010. All Rights Reserved.