2003 75 Diesel Engine Fan sans resistor, failed.
 

Hi everyone �� new member here, pleased to be with you after 12 years of mostly trouble free ownership. Thing is, engine fan doesn't work, hasn't done for a few years, managed to get by without it. (amazing how the engine runs so cool but no quick heating in the winter, no Aircon in the summer) So with climate change threatening hotter summers and time on my hands I thought I should get the fan working. I have tried to get the latest on this but the threads are all quite old. Can anyone direct me to the latest budget fix please? Not averse to fitting new brushes to mine or a used unit. I've read that the fellow Jules was the expert, don't know if he still is. I've found reference to the Kenlow option now maybe Revotec ? Can a used Land Rover unit be fitted ? Retired and muddled so would appreciate some advice. Thanks.

I have fitted a Revotec fan earlier this year, purchased from Jules. Comes with fitting instructions and photos, and was a fairly easy repair to do. Can’t think of anything you should be checking before fitting the fan; if there is, then someone on this forum will point it out.
This is an excellent forum for advice and help- and having fitted one fan, I would be happy to give advice if I can.

Hello Peter,

If you have a 3 speed motor then fitting new brushes is the most cost effective repair. If you can see a resistor through the radiator grille (2 speed system) and it's silver then replace it with the gold version. In rare cases the diesel's control box PCB fails.

Simon

Engine fan replacement hi
 

Hi Simon, thanks for your comment about using new brushes, how likely is the armature to be undamaged, the fan spins freely at the mo. If that's the case is it likely the PCB ? In that case maybe I should go for a new Revotec ? Also in your experience, how often do 2nd hand fans appear for sale ? My idea would be be to get one, fit new bushes, then swap it over. Any thoughts on that ? Cheers.

Loads of fans on e bay - Revotec here ;)

https://www.ebay.co.uk/itm/195063035...QAAOSwb6dZyOdd

And i think this is Jules site - price is for fan and fitting service.

https://www.ebay.co.uk/itm/202491147...IAAOSwSzpbcq-G

The only real way to find out is to open it up and look. There's no point in guessing.
The symptoms of PCB failure are that the fan doesn't turn off so the battery needs to be disconnected to stop it! That's clearly not the case with your car. Edit: Please see information from Mike Noc in post no. 10.
A new Revotec is expensive and requires wiring modifications. You said that you wanted "a budget fix" and that is new brushes on your existing motor or a gold resistor depending upon which type you have.
You're assuming that your existing system is irreparable but you don't know that! It's better to fix what you've got if that's possible.

1. Look through the radiator grille at the fan blades housing. Can you see a rectangular silver resistor at about the two o'clock position? Edit: See photo no. 3 in the next post by Arctic.
2. If yes, you probably need to replace it with a gold version. This is a very cheap repair.
3. If no you probably have a 3 speed system needing some new motor brushes. You said that you are not averse to this repair job.

So please report back Peter with which fan you have and we'll take it from there. :}

Simon

Hi Jon.
That is a very old photo of mine back in 2011, and it was a very bad fan motor had burned out, so you can see from the board.

Most fan motor if caught early the brushes for the low and medium will need changing out, but always best to swap all of them.

As you can se this one was bad also.
https://i.imgur.com/KD3w6Val.jpg1

This one was serviceable
https://i.imgur.com/rxVorMOl.jpg2

Peter should check to see if he can see a silver resistor or not, if yes then he needs a gold resistor.
https://i.imgur.com/hYyWtBfl.jpg3

It could sometimes be the PCB
https://i.imgur.com/kq9J2fml.jpg4

If not maybe some new brushes or contact me ;)

That may be one of the symptoms of PCB failure Simon. Another is that the fan fails to run at all - I have experienced that one myself.