Author Topic: fans permanently on  (Read 206 times)

Offline ollyb679

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fans permanently on
« on: November 12, 2020, 09:31:01 PM »
i am after some help

i have a mark 5 golf bwa engine in my caddy but my fans are now permanently on as soon as i turn the car on they come on. This started about 2 weeks ago


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Offline SalfordParkes

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Re: fans permanently on
« Reply #1 on: November 13, 2020, 01:05:32 AM »
I had the same issue with mine got told of multiple garages it was the fan that was the problem turns out it was my thermostat I changed my coolant temperature sensor and then the thermostat and reset the error codes and the fans haven't been on since

Offline akbarirfan

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Re: fans permanently on
« Reply #2 on: November 13, 2020, 10:13:07 AM »
Could it be Thermostat related?

Offline LC5F

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Re: fans permanently on
« Reply #3 on: November 13, 2020, 08:23:57 PM »
Coolant sensor - there are 2 on the Gti
First one is pretty easy to get to above the box and drives the dash gauge.
But my money is on: the other one that is in the thermostat housing...this is the ECU sensor - and its a bit painful to get at under intake manifold -if you are going in there, replace the thermostat at the same time.