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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 08-22-2011, 10:40 AM
MusicTales MusicTales is offline
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E90 Water pump issue

Learned today that my '06 325i needs a water pump with only 70k miles is that typical? Repair shop ran diagnostics and unfortunately it wasn't the quicker fix of the thermostat as I thought it was going to be.
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  #2  
Old 08-22-2011, 10:46 AM
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cwinter cwinter is offline
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70k miles seems a bit on the low end for the pump to fail, but it wouldn't be unheard of.

I figure most water pumps go between 100k-120k miles.
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  #3  
Old 08-22-2011, 12:15 PM
MusicTales MusicTales is offline
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So this wouldn't be a DIY sort of project?
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  #4  
Old 08-22-2011, 12:38 PM
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cwinter cwinter is offline
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Search around on here or E90 post. Whether or not something is a DIY is dependent on how comfortable you are working on cars and what tools you have at your disposal. I have no idea. I know a water pump would be outside of my comfort zone to replace and since they only go once in a blue moon I'd want it to be installed properly. I am sure you can find instructions online one way or another.
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  #5  
Old 08-22-2011, 12:55 PM
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Bumer Bumer is offline
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Quote:
Originally Posted by MusicTales View Post
Learned today that my '06 325i needs a water pump with only 70k miles is that typical? Repair shop ran diagnostics and unfortunately it wasn't the quicker fix of the thermostat as I thought it was going to be.
Wow, it took your car long for the water pump to go. Anyway, sorry about your pump.


06 325i had issues with water pumps, something about crappy parts, and in later years BMW changes some parts in the pump to make it more durable. On my 325i water pump went around 20K. Of course, it was covered by warranty and replaced with newer one.
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  #6  
Old 08-22-2011, 03:11 PM
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Saintor Saintor is offline
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Quote:
Originally Posted by cwinter View Post
70k miles seems a bit on the low end for the pump to fail, but it wouldn't be unheard of.

I figure most water pumps go between 100k-120k miles.
Maybe. Oddly, I haven't read about any 2007 328i water pump replacement so far. A few 335i though.
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  #7  
Old 08-22-2011, 05:39 PM
Jabroni Jabroni is offline
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Are they still using plastic impellers on the water pumps? My old E46 had water pump problems due to the plastic impellers. I ended up getting an aftermarket pump with metal impellers and that pretty much solved the issue.
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  #8  
Old 08-22-2011, 06:57 PM
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floydarogers floydarogers is offline
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Originally Posted by Jabroni View Post
Are they still using plastic impellers on the water pumps? My old E46 had water pump problems due to the plastic impellers. I ended up getting an aftermarket pump with metal impellers and that pretty much solved the issue.
I believe the E90 pumps all have plastic impellers. However, the type of impeller doesn't matter (Mike Miller recently commented on this.) They just fail.

The main problem with the new waterpumps on the N5x engines is that they're electrically driven (not on the accessory belt) in the interests of efficiency, which adds another failure mode. The initial batches (in the 2006 model year) were evidently not good.

FYI, the plastic-impeller water pump on my 2001 330xi lasted until I traded it in at 145K. IMO, water pump failure is not as big a deal as other coolant system parts, because when it fails you don't face a loss-of-coolant disaster (you get a little more time.)
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  #9  
Old 08-22-2011, 08:11 PM
ctuna ctuna is offline
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For the DIY

http://www.e90post.com/forums/forumdisplay.php?f=16
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  #10  
Old 08-23-2011, 05:05 AM
Jabroni Jabroni is offline
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Quote:
Originally Posted by floydarogers View Post
I believe the E90 pumps all have plastic impellers. However, the type of impeller doesn't matter (Mike Miller recently commented on this.) They just fail.
In my case, the 2 times I had to replace my water pumps, the impellers were broken. After I replaced it with the aftermarket, my water pump never failed again. I'd say that plastic impellers do matter.

Quote:
IMO, water pump failure is not as big a deal as other coolant system parts, because when it fails you don't face a loss-of-coolant disaster (you get a little more time.)
You don't get that much time. Especially with how these delicate these engines are. Any loss of coolant flow is potential disaster.
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  #11  
Old 08-23-2011, 05:57 AM
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Bcube Bcube is offline
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Quote:
Originally Posted by MusicTales View Post
Learned today that my '06 325i needs a water pump with only 70k miles is that typical? Repair shop ran diagnostics and unfortunately it wasn't the quicker fix of the thermostat as I thought it was going to be.
Changing the thermostat isn't a quicker fix - just a less expensive part than the water pump. The Thermostat is attached the water pump. The labor to pull is the same for both - which is why you might consider changing the thermostat now.
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  #12  
Old 08-23-2011, 07:35 AM
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ECSTuning ECSTuning is offline
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We have the OEM water pump and thermostat right here.

Click here for the water pump here.

&


Thermostat unit HERE.




There is a good DIY HERE from e90 post jamesuke92.





Thanks and I hope that helps.


Joe
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  #13  
Old 08-24-2011, 06:11 PM
rkjames rkjames is offline
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2006 325i Water Pump

Mine recently failed at 58500 miles, covered under CPO warranty. Would have been $800 or so out of pocket based on the part numbers and labor from my receipt.
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  #14  
Old 10-07-2013, 07:21 PM
dgrago dgrago is offline
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Have 2006 325i with 67,000 miles. My water pump died without warning and my extended warranty expired within four weeks of it's failure. Upon researching this (most common) problem I am upgrading to a high performance water pump and changing to a slightly larger radiator. I had a friend do this as a preventative measure to his M3 and he is worry free. I figure if it needs to be replaced, I might as well spend a bit more and improve the overall performance of my cooling system. Going with an aftermarket high performance part might save me more dollars in the future. (Hopefully)

Last edited by dgrago; 10-07-2013 at 07:46 PM.
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  #15  
Old 10-07-2013, 11:16 PM
aleks001 aleks001 is offline
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Quote:
Originally Posted by dgrago View Post
Have 2006 325i with 67,000 miles. My water pump died without warning and my extended warranty expired within four weeks of it's failure. Upon researching this (most common) problem I am upgrading to a high performance water pump and changing to a slightly larger radiator. I had a friend do this as a preventative measure to his M3 and he is worry free. I figure if it needs to be replaced, I might as well spend a bit more and improve the overall performance of my cooling system. Going with an aftermarket high performance part might save me more dollars in the future. (Hopefully)
I'm pretty certain that the M3 still has the belt driven water pump. I don't think there is an aftermarket alternative for the waterpump for the N52 and N54 engines. Also the electric pump in our cars probably costs quite a bit more than the M3 one and is definetly more high tech.

Last edited by aleks001; 10-07-2013 at 11:18 PM.
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  #16  
Old 10-08-2013, 05:25 AM
fdriller9 fdriller9 is offline
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Changing the water pump on these cars is a huge pain, especially if you have x drive. You have to lower the subframe a bit to get more clearance. It can be done without dropping the subframe but it will much more of a pain and it's just easier to drop it.

Theses electric pumps can go at 30k or 100k. Mine lasted 80k.

Key to remember is when your tells you your engine is overheating, pull over and stop. I don't know why people thinks it's ok to keep driving. You will blow a gasket doing that. Even though the DME will reduce power, coolant standing still in the block will raise temps quickly.
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  #17  
Old 10-08-2013, 07:25 AM
Miller335 Miller335 is offline
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7 years and 70k for a water pump on a higher then average performing car? Not bad imo.

I bought an 01 tahoe for my wife back in 04 but it was from Canada with 50k on it so it had to deal with tougher roads and a bit of salt. The "lifetime" water pump went out at 60k.
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  #18  
Old 10-08-2013, 07:35 AM
chopin1012 chopin1012 is offline
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E90 Water pump issue

I can't speak to an xi, but an E90 rear drive does not need the subframe lowered to do the water pump and thermostat. You need to lower the sway bar, but it's only four nuts (you don't completely remove it). It took me two hours to disassemble and one hour to install/reassemble new pump. Bleeding is done by the electric water pump, although I needed to top off coolant a week later. More time consuming than front mounted pulley driven pump, but not too bad. There are two great DIYs around here.


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  #19  
Old 10-08-2013, 07:36 AM
chopin1012 chopin1012 is offline
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E90 Water pump issue

I should add I paid around $450 for pump, thermostat, one-time use mounting bolts, and two day shipping.


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  #20  
Old 10-08-2013, 12:36 PM
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Vanos4:12PM Vanos4:12PM is offline
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seems like the ones who have had their water pumps fail on all have 06 MY's?
First year run production problems?
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  #21  
Old 10-08-2013, 01:32 PM
John@SAtlBMW John@SAtlBMW is offline
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I haven't noticed them going out any more for 2006 than for others. Could just be age/mileage related...

2006 BMW 325i - Water Pump Assembly And get a set of aluminum screws -- Part Number: 11510392553.
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  #22  
Old 10-08-2013, 06:05 PM
fb88 fb88 is offline
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I am still on my original 2006 330xi water pump at 149,725 miles... I will make a separate celebration post when I hit 150k miles in a few days!
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  #23  
Old 10-09-2013, 02:32 PM
fdriller9 fdriller9 is offline
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Quote:
Originally Posted by fb88 View Post
I am still on my original 2006 330xi water pump at 149,725 miles... I will make a separate celebration post when I hit 150k miles in a few days!
Wow that's high! Most I've heard on E9x is about 120k
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  #24  
Old 10-09-2013, 09:26 PM
#propaganda #propaganda is offline
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E90 Water pump issue

Purchased my water pump and thermostat from ecs tuning Saturday.. Water pump,thermostat,hose,screws and coolant 550 including shipping.. First DIY project I do. Bavauto YouTube channel has a step by step video on it.. Crossing my finger all goes well. Dealer quoted me 1500 Indy quoted me 1100...


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Old 10-09-2013, 09:31 PM
Ilovemycar Ilovemycar is offline
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Originally Posted by #propaganda View Post
Purchased my water pump and thermostat from ecs tuning Saturday.. Water pump,thermostat,hose,screws and coolant 550 including shipping.. First DIY project I do. Bavauto YouTube channel has a step by step video on it.. Crossing my finger all goes well. Dealer quoted me 1500 Indy quoted me 1100...
Good luck! Pics Pics Pics Video Video Video?
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