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Old 03-24-2013, 05:56 AM
bmwrulez bmwrulez is offline
Location: Hickory,NC
Join Date: Nov 2008
Posts: 12
Mein Auto: 08 550i, 04 Z4
I have had the same issue. My "increased emissions" code said that the coolant wasn't reaching proper temperature. So I replaced the thermostat. Reset the error code. Then same code came back in a few days. After finding another thread on here on how to test the thermostat terminals, I found out the thermostat wasn't faulty. So now i think it may be water pump instead. I'll post again when i resolve this issue. Maybe this will put u in the right direction for trouble shooting your issue.

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