Bmw 318i Radiator Fan Not Working

A malfunctioning thermostat debris or natural buildup.

Bmw 318i radiator fan not working.

Engine cooling fan doesnt work. Hosting a forum like this is not free. Located in front of radiator. Replace the high speed relay.

Test the switches resistor and the fan as follows. 1984 318i sold. The cost to become a supporter is a nominal 10 00. If it does the fan motor is ok.

If the fan does not run on high speed check to see if your application is using a 5 pin relay. A clogged cooling system is usually due to one of a few causes. On the earlier bmw models the fan s low speed resistor may be faulty or the radiator temp switches that control the fan may be faulty. For compression frame only.

If the fan does not run check for 12 volts at terminal 30 in the relay socket. Most bmw models 99 and later and all minis do not have the radiator mounted temperature switches. If so retry the test jumpering from terminal 30 to 87a. Click the link above.

This is referred to by bmw as the pusher fan. The fan should come on at high speed. Models after production cut offs listed use a different cooling fan which does not use a compression frame mounting system. I have a 1998 bmw 318i the radiator fan is not working properly at first the fan would turn on and then it turn off but the car would overheat now the fan doesn t turn on and the car is over heating what could be causing this problem.

As mentioned before when coolant cannot properly flow through your bmw s engine it cannot help maintain the temperature. While there are a variety of reasons your bmw 318i is overheating the most common 3 are a coolant leak water pump radiator hose etc the radiator fan or a failed thermostat.