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Hmmm. Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Fri, 2 Sep 2005 14:34:42 In Reply to: Re: A bit confusing, Jay, Fri, 2 Sep 2005 10:28:51 Members do not see ads below this line. - Help Keep This Site Online - Signup |
With the thermal fuse replaced, there should be no reason to replace the blower motor. Now, if the blower motor is making a lot of noise or otherwise crashing about, I can see a reason to replace it. But if the only problem was the thermal fuse blowing, that doesn't indicate a blower motor problem.
The thermal fuse is there to protect the resistors. I think it is a marginal design. The resistors are in the airflow, and are actually cooled by the fan. At the lowest fan speed, the resistors produce the most heat. So it's possible for the thermal fuse to blow, well, just because.
I'm not sure why the AC compressor won't work anymore. First question again - does the fan work properly now? Is it slow in 1, slighty faster in 2, faster yet in 3, and full bore in 4? If so, then the resistor pack is just fine. (Fuse may be dead). I'm trying to come up with some way to mis-wire the thermal fuse fix (sorry, have to say it) so that the fan still works at various speeds, but the AC doesn't get the signal. Can't think of one.
Does the fan work right on all the speed settings? Also do this check - remove the connector, and measure the resistance from pin 1 to 2, from 2 to 3, and from 3 to 4. I don't really care what the actual resistances are - they should be very low (well below 20 ohms or so - close to a dead short). If one of those measurements is an open, that would cause a problem.
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