86 corvette heater core/AC electrical problem???
Thread Starter
Cruising
Joined: Jun 2009
Posts: 10
Likes: 0
86 corvette heater core/AC electrical problem???
Hi fellas,
After finishing my nightmare heater core installation, I noticed that my a/c no longer works. I noticed that I disconnected a black wire that runs under the heater core box, its next to a orange wire and a black wire with a "spin on fitting"?
Im not sure what the wire was so I grounded it?
What did I DO?? thanks
After finishing my nightmare heater core installation, I noticed that my a/c no longer works. I noticed that I disconnected a black wire that runs under the heater core box, its next to a orange wire and a black wire with a "spin on fitting"?
Im not sure what the wire was so I grounded it?
What did I DO?? thanks
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
The orange wire isn't a wire but a vacuum hose controlling the outside air vent. That's normally open, but HVAC sucks it closed for Recirc or Max a/c. The disconnected black wire looks like the Temp Door motor connector (assuming Electronic Controls). There should be 5 wires and if the Control Panel isn't getting a return voltage (to monitor door position), the OSA LED should be flashing and you won't get a/c.
Thread Starter
Cruising
Joined: Jun 2009
Posts: 10
Likes: 0
The orange wire isn't a wire but a vacuum hose controlling the outside air vent. That's normally open, but HVAC sucks it closed for Recirc or Max a/c. The disconnected black wire looks like the Temp Door motor connector (assuming Electronic Controls). There should be 5 wires and if the Control Panel isn't getting a return voltage (to monitor door position), the OSA LED should be flashing and you won't get a/c.
Ok, went to a shop, he said the vents were probably messed up??
The vent under the dash on the lower right passenger sidewall opens when I put the ac on high, I still cant figure out where this black wire runs too, I figured it attached ontop of round valve used to let air in on the passanger side fire wall?
The lines are ice cold but the vent give out cold air randomly?
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Orange goes to the solenoid on the Passenger Kick Panel. Unplugged, if you've got it on 60, the vacuum is doing nothing (other than bleeding the reservoir) and the other vacuum controlled doors might start flopping around.
Intermittent cold/hot is the Temp Door Motor - plug it back in.
Intermittent cold/hot is the Temp Door Motor - plug it back in.
