AC not working
Drifting
Joined: May 2007
Posts: 1,551
Likes: 324
From: Mid Ohio
Instructor
Joined: Jun 2009
Posts: 109
Likes: 6
From: Scottsdale AZ
Sledge_78
Racer
Joined: Mar 2014
Posts: 253
Likes: 119
From: North Branch Michigan
I recently worked through an issue with my "95, which has electronic climate control. It turned out the damper door that blends hot/ac air was inop. To check for this condition, remove the diode pack thingy from the top of the evaporator plenum (held in place by two screws). It is mounted on the firewall, on the passenger side of the engine compartment, just inboard of the coolant pressure tank. Look inside. The blener door can be seen. The ac evaperator is mounted toward the center of the dash, the heater core toward the right side of the car.
The damper door swings between these two cores to determine how much hot and cold air are mixed to achieve the desired temp. Mine was not working. .stuck in a position that blocked air from going through ac evaporator. Set your temp to lowest setting and look to see if this door moves (with car running, ac on). This whole visual test should tale less than 5 minutes.
On the 1995 model, there is an electrical temp control actuator mounted below the heater box on the passenger side. Mine was toast. Dorman makes a replacement for about $50. Available at Auto VALUE PARTS STORES.
Other years/models may use vacuum controls or actuator may be mounted on top of the heater box. Hope this helps.
The damper door swings between these two cores to determine how much hot and cold air are mixed to achieve the desired temp. Mine was not working. .stuck in a position that blocked air from going through ac evaporator. Set your temp to lowest setting and look to see if this door moves (with car running, ac on). This whole visual test should tale less than 5 minutes.
On the 1995 model, there is an electrical temp control actuator mounted below the heater box on the passenger side. Mine was toast. Dorman makes a replacement for about $50. Available at Auto VALUE PARTS STORES.
Other years/models may use vacuum controls or actuator may be mounted on top of the heater box. Hope this helps.
