Originally Posted by superduty
I'm in so cal. I haven't taken the time to survey where most complaints are from.
Maybe it's silly, but I cringe sometimes when I'm using my a.c. or heater, thinking is it going to go out during this drive.
Anyone out there have problems with blower motor, switch, melted wires etc who live in AZ, NV, TX, or CA?
Recently started having issues with the vacuum selector switch.
Noticed originally, recycled A/C position went out, but still worked on all other settings(A/C and heater). When I say it went out, I mean I had nothing. Function and fan both originally quit on the recycled air setting only.
Next day, while driving around town, the A/C and fan just randomly quit. A few minutes later, back on. Then minutes later, we're off again, etc... Tried wiggling/turning the knob while driving to see if it was possibly a dirty contact or loose switch. No effects from this Hi-Tech process(lol), but if anyone would like my personal technique, I can do a write-up.
Once I returned home, I extracted the HVAC and removed the vacuum selector switch. It was apparent that it had experienced some heat as it was slightly fused to the internal part of the module plate.
So, I'm assuming I need a new switch. Okay that should be easy. Except you can't buy just the vacuum switch on an '05 or '06. Gotta get the entire module. Well I'm okay with that too, as long as it's "the fix."
But would it be a temporary fix??? What's causing the switch to get hot???
I've read where old blowers can over amp, and cause the fan switch to get hot, but would it have any effect on the selector switch???
Finally, just to keep the symptoms updated, when I re-assembled the bad switch in the HVAC, I can't get any of the functions on the selector switch to work now; randomly or not. I can hear vents opening and closing as it rolls past the different function settings, but no A/C kicking on and no fan at any speed. Although, if I turn the selector to the off position(O), I can run the fan on all four speeds as the selector defaults to defrost. I've read this is a factory safety default.
Anyways, I went ahead and ordered a new HVAC module and will install when it arrives next week. (fingers crossed)