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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-13-2012, 11:57 AM   #1
kevind2002
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Join Date: Aug 2008
Location: Austin, TX
Posts: 36
My Ride: 2005 325ci
Need help figuring out a coolant leak (see pic)

I noticed my coolant light came on a week or so ago, so I filled it up and didn't have any other issues until it came on again yesterday. After driving for a couple miles it went off. I topped off the coolant in the car and watched for any signs of leakage. Well I found some after pulling out of a parking spot. I took this pic, forgive the quality, and noticed liquid near what I believe is the lower radiator hose and some sort of sensor. Any ideas on what would need to be replaced? Thanks for the help E46 community.

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Old 01-15-2012, 09:07 PM   #2
BMWtech122
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Join Date: Jan 2012
Location: Boston
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My Ride: 330xi
Hi Kevin, this leak is extremely common. I always replace the lower radiator hose and the sensor, although it is possible to get away with just replacing the sensor. The hose is fairly simple to change.
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