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Old 03-14-2011, 02:29 PM
Neil22 Neil22 is offline
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Location: Washington DC
 
Join Date: Mar 2008
Posts: 7
Mein Auto: 2005 BMW 330Ci ZHP 6spd
You could remove and test it in boiling water. But they're cheap enough to just replace entirely. Might also be some gunk stuck in the radiator. Give it a good flush while you change out the thermostat.
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