1st Gear Member
Join Date: Jan 2005
Location: Clemson, South Carolina
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Well about your coolant issue, go to the dealer, or bavauto.com and get bmw coolant first of all and distilled water, i know it saounds stupid, but ditilled water cost like a buck, and by being ditilled, you avoind having mineral deposits build into the car. That is the first thing
Also, if the cooland is showing low and you've check is not, well there is a sensor inside the expansion tank to indicate that, it fails, so get another sensor, and while you changin coolant change the sensor. And when filling the coolant, it should be on the mark, and that mark is for when the car is cold. So fill it up till the mark with the car cold.
And if you are doing the coolant job, besides of mixing it 50/50, you shuld go and change the thermostant, the thermostat housing, since its a plastic cover and they fail, so get and aluminum one and the water pump, bmw used plastic impeller and they break with no warning., and since there is no way to know whats in there, just get it changed,. O yeah if the fan clutch is gone, get it, you have to pull it out anyway. A good way to know if its gone is by letting the car iddle then get a big piece of plastic and cover the front of the car, so you block air from going trough the radiator and cooling the car. after a while the fan should ratate faster, make more wind noise, since it got hotter, see the principle.. But just make sure you dont let the fan eat the plastic cover youre using and make sure you dont let the car boil...
It seems a lot of stuff but when i got the car, this was my first tune up. and it worth it, now the only thing i replace ever 2 years is a thermostat and the coolant. Well the best thing is to do it every year, but im a college student now and so money is not on a river flow, so i follow BMW factory guidelines..
O yes, there is a separate procedure for taking the coolant out and bleeding the sistem...
if you need it let me know.
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