Water temp sensor leaking after coolant change? - BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3

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Water temp sensor leaking after coolant change?

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.

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Tue, Sep-15-2009, 02:37:59 PM	#1
alanbmoore Registered User Join Date: Mar 2009 Posts: 762 Blog Entries: 4 Reputation: 0 Location: Orlando	Water temp sensor leaking after coolant change? I changed my coolant as part of Level 2. I pulled the water temp sensor out of the lower rad hose to drain, as well as using the engine block drain. I cleaned the O-ring and the sensor body and carefully re-installed it. Now I have a leak there, and it's driving me nuts! After I park the car, I'll get maybe a half-ounce, or 2-inch diameter puddle, under the rad hose. No idea how much it leaks when I'm driving; I don't see streaks on the bottom of the car, but who knows. How do I fix this? New O-ring? New sensor? Can I do it without draining and replacing all the new coolant? __________________ -Alan '04 M3 - SMG '94 E36 track car '87 Mazda RX7 Hotchkis sways - 2.5deg front camber - 18x9.5 VMR CSL reps - Nitto NT-01 275s - PFC06's - Schroth Quickfit

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change, coolant, leaking, sensor, temp, water

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Discussing Water temp sensor leaking after coolant change? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)