BMW 318 Fan Keeps running

chickencurry02 · 29-03-2012 11:43AM #1

Hi I have a 1999 BMW 318 and for the last few days the fan keeps running when i turn off engine and doesnt stop until I unplug it under the bonnet. No warning or problem light showing on dash.What is keeping it staying on? Any help appreciated.

Atlantic Dawn · 29-03-2012 11:48AM

Did you check the coolant level? What is the temperature gauge in the car showing? Could be the thermostat also but check the coolant level first.

chickencurry02 · 29-03-2012 01:16PM

coolant Level fine and temp fine, both as normal

mondeo · 29-03-2012 02:22PM

Dodgy fan switch?

chickencurry02 · 30-03-2012 07:59AM

No we put in a new switch but problem still persists

corktina · 30-03-2012 08:15AM

my guess is it is on a thermostat and runs on until it is cool enough. No doubt it doesnt usually happen, but then we have had the warmest March since before Moses started taking the tablets.

JoeySully · 30-03-2012 10:36AM

I'd double check your coolant again! park it facing up a hill and open the bleed screw next to the coolant filler cap. There could be an air lock.

30-03-2012 10:52AM

chickencurry02 wrote: »

Hi I have a 1999 BMW 318 and for the last few days the fan keeps running when i turn off engine and doesnt stop until I unplug it under the bonnet. No warning or problem light showing on dash.What is keeping it staying on? Any help appreciated.

Do you mean the aux fax between the radiator and engine ? if so then you need a new fan as the relay goes bad and cant be sold seperately.

You man try changing the lower temp sensor but my money is on the relay and you need a new fan for that.

BMW 318 Fan Keeps running

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