Heater Blower Stopped Functioning (read searches)
 

My heater blower worked for about 2 minutes this morning before ceasing to operate. Only hear click-click when moving control. Logicon was re-soldered when direction control went kaput, didn't work, purchased re-built and tested logicon from forum member about 8 months ago. No problems with logicon now or since then.

I have read thru most of the posts I could find regarding this problem and see that the culprit is probably either the resistor relay or a thermal fuse, which I know are on the blower motor housing. I know how to get to them and what they look like. Have checked--no blown fuses. I will remove blower tonite for inspection and cleaning.

Question is where can I find these replacement pieces? Can't find at Mazdatrix. I have a multimeter, used for TPS adjustments, but I am not sure how to exactly test these blower relays. Can't find good instructions searching that I can follow on that, but it appears that one of them is probably bad and the fix is to replace them.

Any assistance would be greatly appreciated.

www.mazdamark.com sells rebuilt logicons, but I'm not sure that's where the problem is. Icemark would be able to more accurately tell you if it's a logicon issue or a problem with the relay or blower itself as he deals with these more then anyone else.

If you look at your dash from left to right you have the heater core, AC core, and then the blower. The blower pushes the air through the other core's and which ever you have turned on either heats or cools the air. So are you getting no airflow at all? or no HOT air flow?

Well, I have a blower motor pulled from my 90 T2 if you need it. Last I used it was maybe in 2001 and it was working back then:)

No airflow at all. It just stopped within 2-3 minutes of turning the fan lever from the off position to full. It was cranking out air and then just stopped. After pushing lever back to off position, and then moving back towards full air, you can hear a clik from the blower area under the dash. If you continually move the fan lever back and forth you can hear the clicking going on and off.

I do not believe this to be a logicon problem. The logicon is controlling the blower fan, its just that the blower will not respond by blowing air, it just clicks.

You've got a blower motor eh? Same one as the 88 GXL probably? Cause I've got a motor but after cleaning it and reassembling it the fan blade section got chewed up and doesn't sit right. I might need that from you, how much you want for the motor and fan?

You may have the same problem as me if you took the fan section off. It just ate the little mount so instead of a rectangle shape it's round and the shaft doesn't grab.

Most likely though, it's probably blocked on something. The motor is clicking when you turn it on but not spinning cause the fan is blocked. Just drop it and check to see if it spins when it's connected and out.

Well thats yet to be determined, but appears to certainly be a possibility. Won't know until this evening when I get the chance to pull the blower from under the dash and see whats going on with it. I had thought that could be happening. Will find out soon. If not, back to square one.

Bad Blower resistor or blower amp (but I would bet even money on it being the resistor).

Where can you purchase the blower resistor? Is this a part you would have to get thru Mazda?