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Old 28th July 2021, 07:51   #11
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

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Martin, where are you?
We're keen to know what's printed on your control box as Arctic asks.
We like to resolve technical enquiries and not leave them open.

Simon
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Old 28th July 2021, 07:58   #12
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Originally Posted by SD1too View Post
Martin, where are you?
We're keen to know what's printed on your control box as Arctic asks.
We like to resolve technical enquiries and not leave them open.

Simon
I'm working and have to wait until this afternnon before I can dismember the car again, but I will post photos of whats in there.
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Old 28th July 2021, 17:20   #13
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I've not removed the fan housing so I can't post pictures of the wiring, but from what I can see.

3 wire motor with purple wire and a silver resistor (that was rivited to the chassis leg), resistor was part of the purple wire.

Control box only had 2 relays in it, the only similarity I can remember is the green foam spacer as seen in Arctics picture. The external of the control box only had the following markings on it.


I've fitted a new 100w 0.5ohm resistor and now have a working low speed & high speed fan
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Old 29th July 2021, 07:58   #14
SD1too
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3 wire motor with purple wire and a silver resistor (that was rivited to the chassis leg), resistor was part of the purple wire.
3 wires and a resistor?
That's an odd combination isn't it Steve.

Simon
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Old 29th July 2021, 10:09   #15
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Originally Posted by SD1too View Post
3 wires and a resistor?
That's an odd combination isn't it Steve.

Simon
Hi Simon.
Yes i have a feeling it's a two wire 2 speed but the OP is counting the purple wire going into the control box not the motor it's self ?
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Old 29th July 2021, 11:54   #16
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Hi Simon.
Yes i have a feeling it's a two wire 2 speed but the OP is counting the purple wire going into the control box not the motor it's self ?
Definatley 3 wires into the motor with a single orange capacitor visible while I had the motor apart.
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Old 30th July 2021, 07:43   #17
SD1too
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3 wire motor with purple wire and a silver resistor (that was rivited to the chassis leg), resistor was part of the purple wire.
That very much sounds like a DIY special Martin which might be hiding other problems.

Does your fan shroud have the mounting for a resistor and if so, did you fit it there (in the airstream)?

Simon
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Old 30th July 2021, 09:03   #18
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That very much sounds like a DIY special Martin which might be hiding other problems.

Does your fan shroud have the mounting for a resistor and if so, did you fit it there (in the airstream)?

Simon
My first thought was 'DIY Special' when I took it off the car, the shroud had been broken so it had obviously been off the car before, but as I looked at the wiring, the heat shrink on the joints and the resistor used, it looked like an OEM job rather than a bodge.

The shroud does have a mounting point for the resistor and I've fashioned up a metal bracket to mount the new resistor in the air flow.

I do want to replace the fan housing with one that's slightly less broken, but I'm prepping the car to go on holiday so don't have time to do that in the next week, but I will update this thread with pictures once I take it off again.
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