MK5 Radiator Fan Problems or not?

[Robin G]

I had previous problems with the thermostat housing, which i hope have been fixed. During this period the fan was coming on just after the car has started, having replaced the thermostat housing, the fan still seems to come when the car isnt at running tempreture........ Any ideas anyone I was thinking about tempreture switch or something similar.........Im no expert  To be honest im not sure if this is a problem or not, also the fan seems to be noisier than others i have had?

[tuscan_thunder]

I'm new to GTis too but I suspect this is your air-con fan (the smaller of the two fans) running. 

I was surprised how noticeable it is. 

The small fan on mine comes on when the air con is on and off when the button's in the 'econ' position (air con off).

[Robin G]

Thank you for your help Tuscan Thunder, I am goin to investigate more in the morning to see if thats it, hopefully it is and not something else. I dare say i will be back in touch with something else !!!! Actually i think i have a rear wheel bearing gone !!!

[Robin G]

Had a look at the air con fan, it aint it !!! bugger...

I have found that the fan was coming on when the car is cold first thing, also when the car was around 50 deg I find it a little strange that this is happenin. I have replaced the thermosat housing as this was leaking slightly.... but the fan still comes on ?? someone help !!!!!!

[Colinv]

Had a look at the air con fan, it aint it !!! bugger...

I have found that the fan was coming on when the car is cold first thing, also when the car was around 50 deg I find it a little strange that this is happenin. I have replaced the thermosat housing as this was leaking slightly.... but the fan still comes on ?? someone help !!!!!!

hi again mate, every chance its the coolant temp sensor (G62) at fault. done a few on the mk5 range. the sensor goes faulty internally and tricks the ecu into giving it the wrong engine temp. hence causing the fan to cut in

[Robin G]

ahhhhh glad your here colin, you are some guy !!

Ok then next question for you !  parts??, Price??, difficult to get to ??

Thanks ever so much for you help mate...... never known a forum to be so helpful.......

[Colinv]

ahhhhh glad your here colin, you are some guy !!

Ok then next question for you !  parts??, Price??, difficult to get to ??

Thanks ever so much for you help mate...... never known a forum to be so helpful.......

haha i think off hand there around £30, it sits into a coolant hose at the right hand side of the engine up the top. remove the engine cover  and look above where the gearbox joins the engine. you will see a black plastic horseshoe clip holding in place in its housing. if you change it, ensure the car isnt warm as you will burn your hand in roasting hot coolant. open the coolant reservoir lid too. quite a bit of coolant will pour out so have the new sensor ready to go in as soon as you remove the old one to prevent losing much coolant then its just a case of topping the reservoir up with some water

[Robin G]

Magic Colin Magic ! would there be a part number for this, ill have to order it from Hawco in inverness, or could i just explain which sensor i need??

Thanks again Colin

[Colinv]

pm me your chassis number if you want and ill get you the exact part number through my work in the morning if you want? It should start WVWZZZ1KZ........

 I cant guarentee this will cure your problem though, its just what i reckon the likeliest cause is, going from what ive came across before. You could try phoning that place in inverness and explain its a coolant/engine temp sensor your after and is fitted into a housing on coolant hoses found at the side of the cylinder head.

If the sensor is playing up, it can also cause poor starting in coldish weather

[Robin G]

Just got the number from my MOT cert : wvwzzz1kz5w229236. Reg is KX 05 OVL

This is magic........ cheers..

The fan coming on all the time really annoys the wife.........

I really do hope this solves the problem, like you said you cant guarentee it but if its only £30 its worth the chance, put it this way the wife would spend more at the shops......  I owe you a pint if i ever meet you !