Fan speed selector problem
#1
Fan speed selector problem
Hey all! Sorry for the "non Ford" question, but I am trying to avoid being raped by a Honda dealer. My wife has a 99 Honda Civic EX coupe. Yesterday, while on a short drive, air suddenly stopped coming out of the vents (A/C was cranked). I pulled over and checked to make sure that the A/C compressor was working (it was), when I got home checked appropriate fuses (looked fine), and tried switching the **** from on to off several times - nothing. In a weak moment of frustration, I smacked the **** - the fan now works only at its highest setting. My guess would be the switch has gone out, so I called the dealership to order a new one and was quoted $362.00. Apparently the the vent selector, temp selector, and fan speed selector are a one unit deal. Any other ideas before I replace the unit? I'm also trying to avoid the all day, $80 an hour, diagnostic process. Thanks in advance for any help!
#2
#6
Originally Posted by PW01
Thanks for the responses guys! Bob, can you explain what a "blower resistor block" is, is it like a relay I can just replace? About where would it be?
The block should be easy to find near the blower motor in the HVAC plenum. The appearance varies from car to car but it will look similar to this when removed:
#7
Bob, again thanks for the help. I found out (through my POS Haynes manual) that in 99 Civics and up, the blower resistor is replaced with a power transistor. I removed the plug from the installed transistor and plugged it into a new one (just had it hanging - not installed), and no dice. I wonder if the blower high relay could be the problem? I don't know because the fan only works at its highest setting. For brief periods the fan has worked normally over the past few days. Do you think it could be the switch? This is driving me up the wall !
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