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BMW 3-Series (E90 E92) Forum
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Waterpump status vs. engine model survey
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| View Poll Results: What is your water pump status and engine model? | |||
| N51 - waterpump failed |
   
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0 | 0% |
| N51 - waterpump OK |
  
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1 | 4.00% |
| N52 - waterpump failed |
  
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4 | 16.00% |
| N52 - waterpump OK |
  
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4 | 16.00% |
| N52KP (2007+) - waterpump failed |
  
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0 | 0% |
| N52KP (2007+) - waterpump OK |
  
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2 | 8.00% |
| N54 - waterpump failed |
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3 | 12.00% |
| N54 - waterpump OK |
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10 | 40.00% |
| N55 - waterpump failed |
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0 | 0% |
| N55 - waterpump OK |
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1 | 4.00% |
| Voters: 25. You may not vote on this poll | |||
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| 04-12-2013, 06:58 AM | #1 |
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Lieutenant Colonel
 
535
Rep 1,873
Posts |
Waterpump status vs. engine model survey
We all know that the N5x water pumps are electric, relatively expensive and can fail without warning (though usually throw codes but no CEL if you're paying attention).
The thing is that all N5x water pumps aren't the same, and a "feature" of the N52KP engine (which I happen to have) was supposed to be the second generation waterpump. It's also unclear to me what effect the higher wattage pump and higher heat loading from the N54/N55 would have on pump life. So, I thought I'd survey for failed and not failed with the different engine models and see if any trends arise. |
| 04-13-2013, 02:37 PM | #2 |
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Captain
 
189
Rep 682
Posts
Drives: 09 328i Sport 6MT
Join Date: Dec 2011
Location: Baltimore, MD
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What year is your car? What is an N52KP?
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| 04-15-2013, 09:35 AM | #3 | |
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Lieutenant Colonel
535
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Quote:
One reference on the KP (sometimes also called the N52N): http://www.e90post.com/forums/attach...7&d=1165592709 |
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