2002 Citroen C3 Cooling Fan

[Glyndawn]

Hi

My lad has just got a c3 and the previous owner has put a switch on the dash to turn on the raditor cooling fan unsure why ?

 

What would i need to do or replace to get this back to standard

 

So it turns itself on when car gets to hot

[paul.h]

Welcome to the forum.

 

You would need to trace the new wiring, it probably comes direct from the battery through the switch, a fuse and to the fan. Then at the fan you would need to connect back the original wiring, if you can find it and hope it has not been modified. You may find the switch wiring has simply been connected up to the existing at the fan end as a back up in case the fan does not come on when needed.

 

If possible I would contact the previous owner to find out why the switch has been put in since to guess may come up with the wrong reason.

 

Possible reasons could be

- the fan relay in the fuse box may have failed so the fan would not run.

- a wiring problem so the fan would not run. 

- an aftermarket fan has been put on which would not work with the existing system.

- the high temperature which normally puts the fan on was not working - does the temp gauge show normal which is 3 bars once the engie has warmed up ? If it is a 1.4 petrol then there are 2 temperature sensors on the cylinder head end. One does the gauge and switches the fan on when 96°C and if it goes a bit higher increases the fan speed. A second sensor gives a high temperature warning, puts the temp gauge to all 6 bars and starts the fan.

- the engine thermostat is faulty so the engine overheats. A new themostat is not expensive so to fit a switch because of this is a bodge.

 

If you have air con check if this works since it needs the engine fan to run and if the existing fan controls have been by passed it may prevent the air con working.

[Glyndawn]

Thanks for that

Ive just been look at the system and im lost carnt make my mind up if its the right raditor and cooling fan just doesnt look right

On the rad on the bottom left the pipe that comes from the bottle has a kink in it

Is there any pictures out there where i can see what they sposed to be like

[paul.h]

There is a picture of a used one on ebay http://www.ebay.co.uk/itm/02-05-CITROEN-C3-1-4-8V-75BHP-MANUAL-RADIATOR-AND-COOLING-FAN-REF-EX535-1415-/162430661986?_trksid=p2385738.m2548.l4275

[Glyndawn]

Thanks for that think ive sorted it now just one more thing is the cooling fan is swiqling making a right racket

How can i make it quiet again or will i need a new one

[paul.h]

Not quite sure what you mean by noise - is it a normal fan noise or screeching as if a bearing has failed or is it just vibrating due to being loose ?

[Glyndawn]

Screeching noise

[paul.h]

You probably need a new one or at least one from another car to keep the cost down.