A few months ago, I wrote about a problem I had with the front AC/Heater blower on my '96 LXi. I never actually fixed it, just ran a hot wire to the blower motor and used it that way. The dealer had told me that it needed a relay but changed that and did nothing. (Very hard to GET to the relay, by the way!) I had gotten some advice from one of the NG member concerning a new resistor block and some wiring that goes with it. When I went to the dealer to get the block $15, I was told I didn't need the wiring, since the block had not changed. When I got home, noticed that the plug that goes into the block seemed discolored (from heat, I thot) at the tan/white wire. I cleaned the connectors, then checked for current at the plug. I had the ignition turned on and tried EVERY setting on the HVAC panel. There was NOTHING from ANY of the wires, no matter which one I checked. I changed the motor (it had begun to rattle from running on high all the time) and found that it would run WITHOUT the resistor block connected to anything...in other words, I removed the plug that plugs into the resistor and the motor still ran, but only on high. And when I plugged it in, it still ran but only on high. Obviously, there is a problem SOMEWHERE but since I've changed the relay, resistor block and motor, what else could it be? Looking at the schematic on page 8W-42-5 of the BIIIG manual, it appears that the relay must be working otherwise the motor wouldn't run at all. (I've disconnected the wire I ran directly to the motor.) But why doesn't it run on any other speed? Is it the HVAC panel? SOMETHING else? As you can tell, I'm mystified and winter is coming on...don't want to have to replace anything when it's below zero. HELP!!! tia...
John