Question about 1999 BMW 323 Series

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Ive got a 323ci bmw on a 2000 plate with 23000 overheatin

Ive got a 323ci bmw on a 2000 plate with 23000 miles on the clock an ive had the water pump replaced an thermostat but still overheatin an the fan is not kickin in

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  • Roy Spooner
    Roy Spooner Feb 04, 2012

    Seriously, run leads on your fan motor. Check to make sure the fan is getting power. A non working fan can make your car overheat and that could've been the problem all along.



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Like Roy Spooner said, it could [have been] your cooling fan. Start up the car, let it run til the temp gauge starts going over the half-mark, by then your cooling fan should have kicked in. If it didn't, shut the car off immeadietly! Let it cool down. Remove the fan motor. With a pair of alligator clips and best, some 12 gauge wire, make two jumper wires for the +ve and -ve sides of the fan and hook them up to your car battery. If the motor runs, you have a problem somewhere between your fuse, your relay and your fan timer control( the little box mounted on the fan housing itself)....if the thermostat was bad, the car would overheat but the fan would be audible as it woud keep running. If the water pump was bad, they have what's caled a "weep" hole where you would se a slow but constant drip of antifreeze externally. Sometimes the bearings go bad on the pump and they start to make a high pitched shrill. Hope this helped someone :)

Posted on Sep 08, 2012

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Repl temp sensor. run 12v to motor, does it run? could be resistors, they're hidden all over the car, thanks to the ******* engineers that put this piece of **** together. or the fan blades could be blocked.

radiator clogged, did someone put stop-leak in it? Remove thermostat drill two 3/16" holes in it 180degress apart, install 12 degree cooler thermostat.

check to see if fan clutch is working properly.

Posted on Jul 12, 2010


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Hope this helps
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