The auto climate control on my '79 Seville suddenly stopped working. Fuses check OK. No fan though. Ideas?

Edward

 

First thing that I'd be checking on the older cars is the grounds. Ground for ECC power module, ground for CC center, you can disconnect the power lead to the motor and supply 12 volts from battery to check if the motor is fine. Is the ECC display totally dead or just portions of it??

 

This climate control system had a habit of melting the connector at the plug in at the control head. If I remember the large diamter orange wire. To verify you must pull the dash control head out from the dash to inspect the multi wire plug at it rear. If its melted, sometimes you can cut that wire out of the plug and connect it directly to the head. another thing these would do is melt the connector at the hi fan relay. Same scenerio, cut the wires out of their harness and plug them directly into the relay. Dont remember where the relay bank is, but I think behind the glove box? Do you have a factory service manual? I assume you have already put 12 volts to the blower motor to verify it works?

 

Guess I'll just take it to the local AC shop. Too busy running our company to wrench right now...

 

i have the same problem and when i went to unplug the blower the connector was melted..so just remove the plastic connector and directly connect the wires?

 

My fan quit. There was melted and burntplastic in the 3 pin connector on the power module in the ac duct. The climate control was inoperable (separate problem). Bad ground connection in the 16 pin connector on top of the instrument control panel. I wiggled the wires and the climate controls went off and on. I cleaned and bent the sockets in the connector. Works now. Easy to get to. Just under the top dash cover, 92 Seville.