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      11-02-2012, 05:31 PM   #1
jo
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Arrow how long did your first water pump last?

the water pump on my '08 135i just failed after 40k and that seems really soon for such an integral part (you know, the thing that runs entire cooling system?) to fail. i understand that the water pumps are prone to failure, so i'm curious what is par for the course so i can try to replace it ahead of time before the next time i have to be towed to a dealer.

or maybe i should hope the new one fails SOONER... like before my CPO extended warranty is up? i don't drive particularly hard, maybe it's time to start....
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      11-02-2012, 08:37 PM   #2
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failing water pumps on BMW around 40k is the norm. My water pump on my e39 fails every 35-40K. A buddy of mine has a M roadster and his fails every 40k.
Buddy of mine has an m5... clock work my friend.. every 40k.

Also, what I have found is that ever 80K or so... full overall of the coolant system needs to be done. I have had many BMW mechanics at reputable independent shops all say the same thing.

This is the nature of this beast... you either live with it or get a Honda
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      11-02-2012, 09:25 PM   #3
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I'm approaching 67k miles on the orginal... figure I'm on borrowed time.
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      11-02-2012, 10:53 PM   #4
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Quote:
Originally Posted by Zeros and ones View Post
failing water pumps on BMW around 40k is the norm. My water pump on my e39 fails every 35-40K. A buddy of mine has a M roadster and his fails every 40k.
Buddy of mine has an m5... clock work my friend.. every 40k.
I had 110K miles (and still going) on my E36's original water pump when I traded the car in for my 128i.
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      11-03-2012, 12:54 AM   #5
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My car has 38k and on its second water pump.
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      11-03-2012, 08:12 AM   #6
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Are there any early warning signs, or just one day it's toast?
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      11-03-2012, 02:21 PM   #7
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mine went out last weekend just short of 76k miles
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      11-03-2012, 02:56 PM   #8
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I've owned 5 BMWs:
'97 Z3 - 69,000 miles
'99 E46 - 97,000
'03 Z4 - 44,000
'07 328i - 52,000
'08 128i - 41,000

None of them has ever needed any cooling system work, other than coolant changes.

Tom
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      11-03-2012, 04:40 PM   #9
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thanks for all the responses. looks like it varies a lot, but failure at 40k seems conceivable.

i asked my SA if there were ever any warning signs or maintenance methods for preventing or replacing the water pump before it failed, but his response was "it's electric - it will fail without notice and that's why you have AAA." there were no warning signs for me until the high temperature warning started coming on.

guess that is indeed nature of the beast with this particular car and its cooling techniques. a quick search seems to indicate that that bmw water pumps tend to be problematic in general. it's definitely a pain, but the looks on the faces all the SAs when a virtually intact, newish car is being towed in... kind of priceless.

(i am kind of the anti-poster child when it comes to positive advertising for BMW... back emblem got ripped off in oakland, and it's already been towed in numerous times for HPFP problems. damned pumps)
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      11-04-2012, 01:24 AM   #10
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FWIW, my 2007 Toyota tundra I traded in on the 135i had its water pump replaced at 54k miles.
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      11-04-2012, 03:04 AM   #11
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In the past, the life of a traditional water pumps had a lot to do with how good the bearing inside of the pump was(that the factory produced) and how "tight" the mechanic installed the belt. Some pumps would fail early and some would go 100K miles!

BMW's have always had weak cooling systems. Meaning water pumps needing replacement every 60K and new radiators at 90K miles and you should probably replace your hoses at that point too. On the older six cylinder cars replacing the water pump was sooo easy. Not so on today's BMW's.

Ticher and United both sell an electric water pump kit for the 135i. I think it runs around $700 for both the pump and thermostat. That's a pretty decent price. Way down for the $1.600 price just last year!
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      11-04-2012, 04:06 AM   #12
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Quote:
Originally Posted by bmw1racer View Post
I had 110K miles (and still going) on my E36's original water pump when I traded the car in for my 128i.
I would say you are the few and I have personally met some people that still have there original water pumps (or so they say) but I am glad that some water pumps can last that long.

I know thought that is a common problem on e39. The M roadster have the issue with the water pump. They however have a alternative to go to. Forgot the name of the company but it apparently can last over 100K. So I am expecting the same from my 128i.

but you never know
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      11-04-2012, 11:12 AM   #13
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Kit used to be $745, looks like they dropped significantly to $475 now.

http://www.trademotion.com/partlocat...catalogid=4462
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      11-04-2012, 11:22 AM   #14
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Quote:
Originally Posted by Zeros and ones View Post
I would say you are the few and I have personally met some people that still have there original water pumps (or so they say) but I am glad that some water pumps can last that long.

I know thought that is a common problem on e39. The M roadster have the issue with the water pump. They however have a alternative to go too. Forgot the name of the company but it apparently can last over 100K. So I am expecting the same from my 128i.

but you never know

I think you are thinking of the EMP/Stewart High Performance Water Pump. It sells for about $200 vs $50 for the OEM pump.(e36 bmw 6 cylinder models)

Check out these cooling kits of older BMW models. I think soon we should see an e8x and e9x kit. So far they only sell the water pump. I would also replace the thremostat while replacing the water pump.

e8x e9x electric water pump $439...
http://www.turnermotorsport.com/p-27...53-engine.aspx

And here is there e8x e9x electric water pump and thermostat kit $571...
http://www.turnermotorsport.com/p-16...-e60-535i.aspx

ALL bmw cooling "kits"...
http://www.turnermotorsport.com/c-10...ter-pumps.aspx



As to when one should replace their waterpump... (taken from Turner's website e8x pumps)...

...How to avoid a water pump failure in the future? Replacing the water pump as part of a regular interval schedule will ensure you always have a functioning pump in place. Since this technology is relatively new for BMW, therefore the lifecycle of the pump isn't yet known, we have been recommending replacement every 80-100k miles. This package of OE/OEM parts covers everything with Original BMW coolant offered to finish off the job. A proper bleeding procedure must be followed with the new electric pump.
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      11-04-2012, 11:04 PM   #15
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i replaced my thermostat and water pump 45,000 miles 2 weeks ago
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      11-05-2012, 01:56 AM   #16
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      11-05-2012, 10:21 AM   #17
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There is an interesting thread on the e90 forum... it is for the NA N52 engine... but still I find the survey poll very interesting!!

How many miles have you logged, and have you replaced your water pump yet?
http://www.e90post.com/forums/showthread.php?t=725313
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      11-05-2012, 10:50 AM   #18
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I just had my 1 towed to the dealer when the coolant light came on and I found coolant all over the engine. I don't know whats wrong yet but I'm hoping it has something to do with them replacing the injectors the day before (so I won't have to pay).

I have 45k miles on it.

Otherwise maybe I'm looking at a water pump/coolant system failure. Water pumps are really expensive to replace, correct? Because you have to take apart the whole engine?

I had a water pump fail on my old Audi TT at about 40k miles (under warranty) but the new pump lasted another 80k miles (until I sold it) with no problems.
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      11-05-2012, 11:03 AM   #19
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Quote:
Originally Posted by gio View Post
I just had my 1 towed to the dealer when the coolant light came on and I found coolant all over the engine. I don't know whats wrong yet but I'm hoping it has something to do with them replacing the injectors the day before (so I won't have to pay).

I have 45k miles on it.

Otherwise maybe I'm looking at a water pump/coolant system failure. Water pumps are really expensive to replace, correct? Because you have to take apart the whole engine?

I had a water pump fail on my old Audi TT at about 40k miles (under warranty) but the new pump lasted another 80k miles (until I sold it) with no problems.
Noop. The pump bolts up to the outside of the engine. It sits outside of it. It should be only a few hours in labor to replace one. The dealers are charging around $1,300 or so. You can buy the pump and thermostat for $500 to $700 and have an indi shop change it. But maybe your dealer will get bmw to pay for it?
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      11-05-2012, 11:23 AM   #20
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Quote:
Originally Posted by Dackelone View Post
Noop. The pump bolts up to the outside of the engine. It sits outside of it. It should be only a few hours in labor to replace one. The dealers are charging around $1,300 or so. You can buy the pump and thermostat for $500 to $700 and have an indi shop change it. But maybe your dealer will get bmw to pay for it?

That's good to hear. For my Audi it was like 8 hours of labor to just get to it.
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      11-10-2012, 06:07 PM   #21
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Wow I'm scared now lol.
Should I buy the kit just to have it on hand?
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      11-12-2012, 12:20 AM   #22
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^That's what I'm thinkin...
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