[Healeys] 100 Heater motor or switch problem

[David P]

I am one of the few that actually praise Lucas electrics because that 
can generally be taken apart cleaned and returned to service. My guess 
is that you had/have a connection issue with a push in connector or a 
Chinese

fuse that often look OK but separate at the metal caps internally or 
corrosion on the fuse clips. DaveP


On 10/26/2018 10:36 AM, Steven Kingsbury wrote:
> Great news! I have a mechanic I work with and he does many British 
> cars. Many times they arrive with a "problem" and as soon as he starts 
> to look at the "problem", it's fixed! Don't know why or how, but it's 
> working! Around the shop we call this "FM". Loosely translated it 
> means: F**king Magic!
>    Glad to hear you're up and running again and if my heater motor 
> ever needs attention, I like your idea of closing off the top vents, 
> thanks for the suggestion.
> Steven Kingsbury
> BM1 #598
>
> On Oct 26, 2018, at 09:09 AM, Michael Oritt <michael.oritt at gmail.com> 
> wrote:
>
>> 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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