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Message: <blockquote data-quote="maxxsp" data-source="post: 623715" data-attributes="member: 4808">Fitted a new Thermostat and Coolant Temp Sensor recently.The issue was with the coolant temp climbing near the 3/4 mark on the gauge while driving, whether or not I was pushing the car hard. Temp would come down soon after I idle (at the traffic lights for example). Aux fan would kick in on high most of the time with both aircon running and off. Suspected faulty thermostat and/or coolant temp sensor.Changed both and the aux fan no longer kicks in at full speed, even when idling. Have not had the chance to take the car for a drive yet as I have the exhaust off waiting for parts to come in but I think the issue is solved.New Thermostat and O-Ring<img src="http://i373.photobucket.com/albums/oo179/yemeng87/E46%20M3/034.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />New Coolant Temp Sensor<img src="http://i373.photobucket.com/albums/oo179/yemeng87/E46%20M3/088.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Old Coolant Temp Sensor - Notice the worn O-Ring<img src="http://i373.photobucket.com/albums/oo179/yemeng87/E46%20M3/089.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Old Thermostat - The spring was not seating correctly causing the thermostat spring action to be rough. This lead to it being stuck closed sometimes.<img src="http://i373.photobucket.com/albums/oo179/yemeng87/E46%20M3/090.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://i373.photobucket.com/albums/oo179/yemeng87/E46%20M3/091.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

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