dburgjohn

I only have high and off on my AC/Heat fan. Did i park in a wrong neighborhood and someone steal them?

Ganey

Check fuse- probably marked heater. If ya parked in the wrong area ya wouldn't have to ask!

08vycpe

Check the blower motor resistor located on the passenger firewall near the blower motor mounted horizontally on the plastic case. It helps to post the model year when asking questions. It shouldn't be too hard to fix.

dburgjohn

Sorry, year is 1981. Don't think fuse because high works, just the lower settings between off and high missing.

Ganey

The fuse box supplys power for the lower speeds. High is separate.

08vycpe

Not fuse, resistor. Maybe the '81 doesn't have a blower motor resistor but I would be surprised if it didn't. Even my newer cars have one for the blower. It's the different resistance levels as you switch speeds that turns the motor at different speeds. If the blower motor resistor goes bad you will have off and high only.

dburgjohn

I found resistor under hood and removed it. The connector pins are crudy but I got a reading through them and the wires on the bottom look good. Could the switch contacts go bad on low speeds and maintain high?

dburgjohn

I noticed the terminals were really crudy. Took a little sandpaper to them, pluged it up and it works. Some times you get lucky.

SIXFOOTER

That wasn't luck, it was good troubleshooting