[Healeys] 100 Heater motor or switch problem

Michael Salter michael.salter at gmail.com
Fri Oct 26 10:03:16 MDT 2018

It will stop working as soon as you finish installing the repainted front
cover ... guaranteed 😁😁


On Fri, Oct 26, 2018, 11:54 AM Michael Oritt, <michael.oritt at gmail.com>

> About an hour ago I popped the spring clips off of the heater face-plate
> which gave me access to the back of the rheostat switch. I first verified
> that there was power to the switch and then jumped across the two posts
> with a screwdriver. The heater motor came on full blast, telling me that
> the problem was in the switch, which had felt a bit odd when I initially
> encountered the problem a few days ago as the "detent-like feel" when
> turning the fan on was missing. Though I assumed I had identified the
> problem as being in the switch I nevertheless turned the control knob just
> to see how it felt and--wonder of wonders--the fan motor immediately came
> on. What's more it responded perfectly to the rheostat, going from full
> blast to low just as it always had.
> I am 100% certain that I had the ignition switch on and the heater power
> lead connected with an intact fuse and I can only say that this is a
> typical Healey deal, and now that the car has my attention I am sure that
> should I simply close the heater up the switch will probably act up at some
> point in the future. I'm going to investigate whether I can source a
> replacement switch, either Lucas or not. I'll also take the opportunity to
> repaint the front plate in black crackle and I am going to close off the
> top opening that supplies heated air to the two vents in back of the
> windshield, which seems like a waste of hot air.
> Thanks all for your patience and advise and I hope this gives some of you
> who have experienced similar situations a laugh.
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