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Re: How Would You Know If Your Cabin Air Temp Sensor Stopped Working? Posted by Ari [Email] ![]() ![]() In Reply to: How Would You Know If Your Cabin Air Temp Sensor Stopped Working?, sifui, Thu, 25 Jan 2001 01:21:28 Members do not see ads below this line. - Help Keep This Site Online - Signup |
If the fan stopped working, the ACC wouldn't be as accurate setting the temperature in the cabin. Seeing as the ACC isn't all that accurate to begin with, it would be hard to tell. I don't expect you'd freeze or boil - it would depend on stuff like the amount of sunlight falling on the dash, as the sensor would be detecting more about the dashboard temp than the air.
Your best bet is to blast it with a can of compressed air, like you use for cleaning camera lenses. The usual reason for the buzz is that the fan pulls in dust, and that cakes on the fan blades. If you do lubricate, I recommend a dry lubricant, like a silicone powder like they use for locks. I don't recommend liquid lubricants. They tend to attract and trap dust, and the problem comes right back. What's more, the temperature sensor is a little thermistor mounted in front of the fan, and it usually gets very fuzzy with dust. Air will blow it off, but a wet lube spray will cause it to attract new dust. With a nice layer of insulation (dust), it won't read properly.
Clean air, then if it stil buzzes, dry lubricant. If you want to know if the fan is spinning, look in with a flashlight when the car is off. You'll see the blades. Then look in with the car running - the blades will be a blur.
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