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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Coolant leak



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      11-29-2013, 11:56 PM   #1
Monster900
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Coolant leak

While I was underneath of the car I have noticed small coolant leak on the driver (left) side right over intercooler's cold air outlet where coolant drain plug is located also the trey on the left side was wet, and there is dry coolant splatter on the plastic coolant line underneath of accessory belt so it looks like coolant is spraying a bit. All coolant hoses on the top left side are dry and coolant level shows full. Any ideas?
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      11-30-2013, 02:20 PM   #2
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leaking/ about to die water pump, t stat perhaps. what's your mileage and has water pump been changed yet?
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      11-30-2013, 02:53 PM   #3
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Quote:
Originally Posted by longliven54 View Post
leaking/ about to die water pump, t stat perhaps. what's your mileage and has water pump been changed yet?
Car has 115k kms on original water pump however the leak is on driver and not passenger side of the car and that's where water pump and t-stat is located therefore I doubt it that this is the issue.
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      12-01-2013, 03:10 PM   #4
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would be a good safety measure to change t-stat and water pump at that mileage. that way when you refill the coolant, you can keep a better eye at it.
preventative maintenance is way better than being stuck on the way somewhere.
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      12-01-2013, 10:15 PM   #5
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Quote:
Originally Posted by longliven54
would be a good safety measure to change t-stat and water pump at that mileage. that way when you refill the coolant, you can keep a better eye at it.
preventative maintenance is way better than being stuck on the way somewhere.
The car has 68k miles on it and it is mostly highway driven so I feel that it is too early to think about changing water pump and t-stat.
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      12-01-2013, 10:29 PM   #6
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