Carb butterfly spindle seems OK.
When I wrote “Can you guess yet” I was convinced A RAT had chewed on the wire from the temperature sensor, which in hindsight seemed a predictable downside of soaking it in sunflower oil, though I hadn’t predicted it.
(CORATERAL damage? works with a cod Japanese accent. )
Now I’ve had a better look I’m not so sure. Some insulation is missing but the wire seems intact. Shorting it to earth (which I THINK should activate the fan), doesn’t
Fan is OK from jumpering it direct to the battery with half an old power cord, though I got my feet quite badly bitten by aggressive little red ants (probably Fire Ants, an invasive pest here) getting some field sand to rub the contacts with. Still hurts.
What I guessed was the fan relay seems to work when 12V is applied to the low resistance (about 100 ohms) contacts, and jumpering the ports in the connector block corresponding to the switched contacts together with a bit of wire makes the fan run.
This SEEMS to indicate a break between the temp sensor and the relay, inside the wiring loom, which would be a pain to trace. I could maybe bypass it with an extra wire though.
I used sunflower oil because I thought its special characteristics gave it a chance of working, and maybe it did. Hard to tell with an intermittant fault but that’s the longest roo-free run I’ve had since this started.
Are there any commercial products for this sort of vacuum leak-stopping?
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