Question about 2003 BMW 325

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Radiator fan blown up put hole in radiator need to change both need help with and tools needed

How do change the radiator fan on a 2003 bmw 325i

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First you have to remove the air intake panel by either the screws or the pushclips on the sides. This then simply lifts up allowing you to gain acces to the radiator fan.

The viscous coupling fan is then held on by what appears to be a large nut coming out the side of the engine. i believe this is a 32mm ad an open ended spanner is the tool for the job. However its on tight so gently tap with a hammer to loosen and able to unscrew by hand. The fan cover/gaurd around the fan is held on again by 2 screws/pushclips on either side and would need to be lifted out with the fan.

When reversing the steps to fit a new one you only need to nip up the fan when tighteneing as the it uses the rotation of the engine to keep the fan tight in place!

Not a difficult job but can be tricky putting the new fan back on the threads!

Hope this helps!

Posted on May 28, 2009

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Posted on Jan 02, 2017

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Why is my 2001 bmw 325i still is overheating after i changed the water pump, thermostat and purge the system?


Well Michael put your hand on radiator upper hose and then the lower hose right after car warms up and just starts overheating is there a temperature difference if so one of two things is going on thermostat not opening even though it is new or there is still an air bubble in the cooling system if nthere is no difference and still overheating might have to explore headgasket being blown

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Your fan resistant as you put it is on the side of the internal heater radiator container. a bit hard to get at Easy way of puting is above the clutch pedal (right hand drive) on to your left. Hard to see. One screw holding the unit.

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Diagram reqd


check out realoem.com and input your car information and it should give you some diagrams. i just used one of their diagrams for my 2003 bmw 325i belt change and it helped a lot

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