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BMW 3-Series (E90 E92) Forum
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Waterpump kicking on after shutdown
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| 06-12-2014, 01:50 AM | #1 |
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Jo Who? JOYU!
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Waterpump kicking on after shutdown
I have a 335i n54 model year 2010, I understand that the water pump in our motors are electrical and apparently they run after the car is shut off to cool down the turbochargers. My waterpump never use to be constantly on after shutting off the car, but recently it just started to happen (stay on after the car is shut off and door is locked) and now it drains the battery to the point where it runs dead. I still see voltage around 5-9v with a multimeter but not enough for the electronics to work at all. Anyone ever deal with this problem?
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| 06-12-2014, 02:46 AM | #3 |
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Jo Who? JOYU!
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would the water level direct the pump to kick on? I haven't checked water level in some time but it shouldn't drop due to it being a closed pressure system unless i have a leak =[
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| 06-12-2014, 04:37 AM | #4 |
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Captain
 
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Maybe it's just hotter outside and it feels the need to run the pump. The water pump on my car always stays on for a little bit after shutting the car off but never to the point were it would kill the battery, maybe the problem is with the battery
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| 06-12-2014, 10:18 AM | #5 | |
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Major
 
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Quote:
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07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's
09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system |
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| 06-12-2014, 11:26 AM | #6 | ||
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Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
 335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust335i 2009 e90 665RWHP VFF900 ST RIP  . |
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| 06-12-2014, 01:51 PM | #8 |
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king of the hills
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Drives: 2011 M3 w/ESS55, 2001 540i/6
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Possibly symptoms of your water pump going out, how many miles on the car?
A battery going dead also tends to do wonky things to the car, but whether the pump is the cause or the effect of the dead battery would be tough to tell. |
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| 06-12-2014, 02:58 PM | #9 | ||
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You seem to listen to me so I guess I'm not a complete illiterate. 
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust335i 2009 e90 665RWHP VFF900 ST RIP . |
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| 06-12-2014, 03:41 PM | #10 | |
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Drives: C6 Z06, 09 335i, 10 335xi
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Quote:
After you check that I would look into that thread from 3000GT |
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