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Old 11-16-2017, 05:13 PM
Scott ZHP Scott ZHP is offline
Join Date: Apr 2006
Location: PA
Posts: 472
Scott ZHP is on a distinguished road
I fought with one of these last year. New Wahler stat to replace the 3mo old Behr stat; no change.

Turned out to be a bad heater valve. Even with the heater off, I was always circulating coolant through the core. With the heat off, feel both outlet hoses, neither should be hot.
12 E70 3.5i xDrive
03 E46 330i ZHP
01 E53 3.0i
98 E36 323is
12 Audi A4 Quattro
79 Triumph Spitfire
73 MGB
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