Blower motor???

[SleeperScamp]

1970 340 Duster factory a/c.. Blower works on low only.Even when switch is on high it still just blows on low. Where do I start?? Thanks in advance..

 

[67Dart273]

You sure the motor isn't dragging?

 

[SleeperScamp]

You sure the motor isn't dragging?

I'll check that out.. Thanks.

 

[340sFastback]

Could be switch. Hook 12 volts directly up to it. The wire connection is in the engine compartment. Then see if it spins fast. I believe there is also a blow motor resistor which could be causing problems.

 

[ken5124]

Probably the resistor, mounts on the top of the heater box.