Auq 1.8t overheating help!!

[lynneandcrow]

Hi there I've got a serious problem with the car overheating I can't go for anymore than a mile without the temp going off the scale (120 & flashing light)unless the car has sat overnight and is stone cold. Only once I get to 110°C I can hear the large fan kicking in. The timing belt and water pump has been changed about 2 years ago so I'm ruling out the water pump and if I give it some revs the engine cools slightly but its a vicious circle doing that. The 2 fans do not run at all untill the engine peaks at 110°c?

I was wondering if this could be a temp sensor prob or a loose wire as the car blew a breather hose in front of the rad and possibly the mechanic had damaged or loosened a wire for the sensor on the fan. It has been happening since then. Also just changed the large fan as the bearings where going and was really noisy. The fans don't even run with the air con on.

Where is the temp sensor for the fans located. Or could it be a realay? Should the fan(s) run all the time or is the engine cooled with the water pump only this car is turning into a money pit. Just replaced the turbo/dump valve/n249 bypass/fpr/fuel filter/ loads of suspension work etc every month its a new prob I'm pulling my hair out now and I've not got much left.

Please help the car is impossible to drive ATM.

 

[Cupra Ross]

Don't discount the water pump, a 2 year old one is more than capable of being faulty. Possible that the thermostat has stuck shut. Have you tried removing it?

 

[Azza_]

definitely agree with above, water pump is massively common and if it was an after market pump it may well be faulty.

one quick test is get the car upto temp and check the hose ontop of the water bottle that is the water return hose, no flowing water is probably bad pump.

 

[nd-photo.nl]

If you do need to replace the pump, double check if the new one has a metal impeller (i believe Contitech sells these)

 

[benpoole]

Fan should run when air con is on

Common for resistors to go. Check other posts on here

 

[lynneandcrow]

Thanks for all the responses yeah there's no water being returned to the expansion tank but I am still optimistic that its not the water pump more in hope than anything else. I have ordered a new thermostat and water pump plus timming belt so I will get the car back into the garage and will let you all know what happens. BTW the aircon fan will not function with the air con on dose anyone know where the relay is for the air con fan is and what number it is.

Thanks people

 

[lynneandcrow]

Solved: It was the thermostat that was gubbed all working now. Thanks guys.