Hello Phil,
Thought I'd jump in here because some important points you made earlier haven't been addressed. So, I'll chuck in my observations.
Quote:
Originally Posted by chillyphil
Managed to have a look at the fan this afternoon.
There is no resistor visible.
There are the two screw holes on the housing which look like where the resistor should be.
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Unless you have a very rare 2-speed setup, you have the earlier 3-speed system. This doesn't have a slow speed resistor and is fixed in a different way. Either a motor brushes replacement or a complete system swap to the later 2-speed is needed. The latter is a plug'n'play swap, though would need a resistor upgrade if not included.
Quote:
Started the engine and left it on idle.
Engine temperature climbed to 96, fan didn't come on.
Temperature climbed to 107, still no response from the fan.
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Apart from the aircon demand, your engine cooling stage 1 and 2 systems aren't tripping on at 100C and 106C as they should.
Quote:
I bottled out then and turned the demist on.
The fan came on and the engine temperature quickly dropped to 102 within around 1 minute. Leaving the demist on and fan running, the temperature dropped to 96 within six minutes.
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Logically, there was a significant delay before the fan started? Is that so?
The lack of the fan speed 1 and 2 will eventually overheat the aircon sytem and invoke emergency high speed cooling.
So, I think there's a bit more to your predicament than air in the cooling sysem.
TC