Weird A/C Gremlin?

Gawernator · Gawernator's Garage

So, the A/C in my '86 was converted to R-134a by a PO. It works very well actually, but the fan works on settings 2-4 only with the A/C on. At setting one, there is no movement, just like on setting 0 or "Off". This isn't normal right? With the heater turned on, setting "1" does work however.

89-944NA · 89-944NA's Garage

should work at all 4 settings with either the heater or a/c on

Gawernator · Gawernator's Garage

So what could it be? Everything about the HVAC works except cooling at setting "1".

89-944NA · 89-944NA's Garage

setting 1 on the a/c is very low, tape a small piece of string to the vent, turn on the a/c, and set it to 1 on the fan switch...should see light movement on the string (just a bit more than it moves with the fan off)

Gawernator · Gawernator's Garage

Thanks, I will try that. I have sat there with my hand just feeling for anything and I swear there was no movement, but the string test will be helpful, for sure.

89-944NA · 89-944NA's Garage

it has to be some pretty light string, like kite string, or heavy thread. Good Luck

mattdavis11 · 06-02-2012, 10:09 AM

It's probably the switch, but might be the resistor. Take them apart to clean them, or buy new ones.

JAXTURBO · JAXTURBO's Garage

Quote:

Originally Posted by mattdavis11

It's probably the switch, but might be the resistor. Take them apart to clean them, or buy new ones.

a 1 hour soak in white vinegar works well for dirty resistors

968 GUY · 968 GUY's Garage

Resistor more than likely.