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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 > Alright, cant figure out why my water pump is on when the car is cold



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      04-13-2016, 05:08 PM   #1
Nicky92
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Alright, cant figure out why my water pump is on when the car is cold

I have looked through tons of searching. Seems no one has this problem.

Car has been sitting for hours. I unlocked it to get something out of it....remember the car is cold.

The Water pump kicks on, and has been running for about 10 mins now. Circulating the coolant. I opened the cap to confirm and yep its coming through, its circulating.

I went through each module with bt tool and there are no codes that have to do with that. Just O2 sensor codes.

Car has 93K on it. water pump was replaced at 51k by bmw.

Any ideas?
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      04-13-2016, 10:04 PM   #2
Nicky92
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no matter what post I make no one has my issues, ever lolll poop
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      04-13-2016, 10:09 PM   #3
LaxIan55
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Does it have a jb4? Might have max cooling mode on.
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      04-13-2016, 10:22 PM   #4
Nicky92
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No, I checked that
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      04-13-2016, 10:34 PM   #5
Nicky92
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Might have found my own issue lol

http://www.n54tech.com/forums/showth...r+pump+running
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      04-13-2016, 10:35 PM   #6
Nicky92
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I just don't wanna replace something if I don't have to :/
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      04-14-2016, 08:28 AM   #7
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Probably a fouled cahnusten valve.
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      04-14-2016, 08:55 AM   #8
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Thermostat stuck open? That usually throws a code though.
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