Engine Size: 2.0L
Refrigerant Type: ?
Ambient Temp: ?
Pressure Low: ?
Pressure High: ?
Country of Origin: Japan
I have a unique problem with my A/C that I can't figure out. Like the title implies, my A/C compressor will only turn on when my blower setting is set to '1'.
I have a temp knob, a blower speed knob, and an A/C button/light. As soon as I turn to a blower setting other than '1', the light turns off and so does my cold air
A friend told me that there was a bad switch, and proceeded to pop off the blower knob and wiggle the little control stick with a needle-nose. The A/C then magically worked
on blower settings 1 and 3. Now it has gone back to its previous state. How do I fix this?
BTW, sometimes, if I hold 'UP' on both of my automatic window controls, the A/C light will come on with the compressor for a few seconds...
Thanks for your help,
I have a 1988 made-in-Japan Mazda truck, and these sometimes experience similar issue, and are due to a faulty blower resistor pack, mounted on the evaporator case under the dashboard.
When I saw your post title, I suspected Mazda...
Edited: Thu July 28, 2011 at 2:52 PM by Cussboy
thanks for the quick response.
blower resistor pack? is this something that I can replace myself?
like, get rid of bad resistor(s) and solder new ones in?
and is it something i can confirm visually?
Does the blower work on all speeds?
Yes, the blower always works on any speed.
I think if the OP is having this problem but the blower works on all speeds, it has a different type of system where the compressor is controlled by another contact in the blower switch (which would be closed for all speeds except off). So the switch would be bad.
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