HVAC Blower

[BgBlock69]

Yesterday my daughter took my 89 Vert out. She made a stop at a local restaurant, shut the car off but the blower kept running. She brought the car home and parked it until I got home from work. When I got there the HVAC blower was still running. The car was shut off. I pulled the plug on the blower, this was the only way I could turn it off. Anyone have an idea to what the problem is?

 

[Ken]

Before we get anywhere, is it an electronic system? :confused

 

[Ken]

Unless it is in the head of the ECC, or you don't have ECC and it is a manual system, the possibilities could be a stuck relay, a bad resistor, and maybe a few other things. Anybody else have any suggestions?

_ken

 

[Eagle85C4]

Have to agree with Ken....first I would trace the wires back to the relay. Usually you can take the top off of the relay and clean the contacts. Use an emory board or a piece of sandpaper. Then have someone turn the blower on and watch to see if the relay "cycles". If not replace it.

 

[vigman]

If your system is the ELECTRONIC A/C C68

There is no relay... there is a solid state speed control.. and it would be located where the blower resistors would be in a manual style ( ac control) at the very top of the air plenum under the hood, pass side facing up with a single 4 wire connector on it.

Iz KAPUT!


Vig!

 

[BgBlock69]

OK, my controls are electronic. On top of the plenum are two multi-wire connectors. I removed the one closest towards front of car, to shut it off. Should I have power all the time here even when the car is off? You think my problem may be here?

 

[BgBlock69]

Problem solved. It was the Blower Control Module (Solidstate). The Dealership wanted 160.00 dollars for new module. I went to local Salvage Yard and took one off of 99 Caddy. Paid 5.00 dollars.

Thanks Guys for your help
Harold

 

[vigman]

COOLNESS!

TADA!
( putting another HELP hashmark on my CAC tab)

The module will have power all the time!


Vig!

 

[Eagle85C4]

Way to go Vig....:BOW