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Old 01-19-2010, 01:30 PM   #18
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Join Date: Dec 2008
Location: T.O.
Posts: 530
My Ride: '05 325i MT
Originally Posted by paraklas View Post
If you have a manual it takes an hour the first time and you only need basic tools, 10,11,13mm sockets, torgue wrench, T20 bit, big philips screw driver (bleed screw).

You might want to check some other things before replacing the thermostat, such as properly bleeding the system, checking the connection on the heater water valve next to the airbox, climate control system etc. A faulty thermostaty will not usually cause the symptom you describe
for the t-stat, other than the obvious symptom of the temperature gauge not aligning up at the center, vertically, i've read that the cabin takes unusually long to warm up.
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