Diesel radiator fan motor

Split_Pin · 1st May 2018, 11:54

Just working through the issues in my CDT just now.

There is so much info on here about this and I am confused.

Tested my fan this morning using the demist button on the climate. The fan was not turning.

Can anyone please tell me what parts to test for faults and the best parts to buy to fix this.

How do I know if I have a 2 or 3 speed fan?

Any help appreciated.

T-Cut · 1st May 2018, 14:14

A late 2003 model will probably have the later 2-speed system, but to be sure, you must check for the presence of the low speed resistor. This is visible by looking through the front grill and past the fan blades. In the 2 o'clock position, check for the presence of a thin aluminium resistor about 4" long screwed to the fan guard. Use a piece of wood, etc.to turn the fan blades as necessary.If the resistor is there, then it most likely needs replacing. You can get the heavy duty resistors from forum traders, ebay or electronics outlets like Farnell, etc. If you don't see a resistor, the chances are it's the earlier 3-speed motor. In that case, the motor brushes will have worn away. The fix is then more complicated.

More on resistors:https://the75andztclub.co.uk/forum/s...d.php?t=216734

TC

Split_Pin · 1st May 2018, 15:26

Thanks very much for the advice, I shall investigate!

Split_Pin · 1st May 2018, 17:12

Ok it looks as though I have the 3 speed fan. Damn.

T-Cut · 1st May 2018, 18:40

New brushes maybe? New (2-speed) fan system?
It's all here on the forum.

TC

1st May 2018, 11:54	#1
Split_Pin Regular poster Rover 75 Saloon Join Date: Mar 2018 Location: Bonnybridge Posts: 65 Thanks: 37 Thanked 12 Times in 7 Posts	Diesel radiator fan motor Just working through the issues in my CDT just now. There is so much info on here about this and I am confused. Tested my fan this morning using the demist button on the climate. The fan was not turning. Can anyone please tell me what parts to test for faults and the best parts to buy to fix this. How do I know if I have a 2 or 3 speed fan? Any help appreciated.

1st May 2018, 14:14	#2
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	A late 2003 model will probably have the later 2-speed system, but to be sure, you must check for the presence of the low speed resistor. This is visible by looking through the front grill and past the fan blades. In the 2 o'clock position, check for the presence of a thin aluminium resistor about 4" long screwed to the fan guard. Use a piece of wood, etc.to turn the fan blades as necessary.If the resistor is there, then it most likely needs replacing. You can get the heavy duty resistors from forum traders, ebay or electronics outlets like Farnell, etc. If you don't see a resistor, the chances are it's the earlier 3-speed motor. In that case, the motor brushes will have worn away. The fix is then more complicated. More on resistors:https://the75andztclub.co.uk/forum/s...d.php?t=216734 TC Last edited by T-Cut; 1st May 2018 at 14:19..

1st May 2018, 15:26	#3
Split_Pin Regular poster Rover 75 Saloon Join Date: Mar 2018 Location: Bonnybridge Posts: 65 Thanks: 37 Thanked 12 Times in 7 Posts	Thanks very much for the advice, I shall investigate!

1st May 2018, 17:12	#4
Split_Pin Regular poster Rover 75 Saloon Join Date: Mar 2018 Location: Bonnybridge Posts: 65 Thanks: 37 Thanked 12 Times in 7 Posts	Ok it looks as though I have the 3 speed fan. Damn.

1st May 2018, 18:40	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	New brushes maybe? New (2-speed) fan system? It's all here on the forum. TC