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      08-09-2016, 03:51 PM   #74
e90dum
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Drives: E90 LCI 328i manual
Join Date: Dec 2015
Location: East coast US

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Quote:
Originally Posted by hassmaschine View Post
The OCD folks will say replace it right away. I think, just wait until it fails. Having towing coverage is a good idea, or even having the parts in your trunk if you're a long ways from home, but IMO there's no reason to replace it if it's not a problem.

It seems to me like the N54 pumps fail sooner than N52 - how many N54 pumps have gone well over 100k? I'm guessing not many. They are definitely stressed more and it's also a different part. I believe they have a higher flow rate as well.

My towing coverage is my grandfather having a wrecker i can borrow, but is this something that WILL fail, or does everyone here want to trick me into blowing money (like the belt failing blowing up your engine)
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