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      02-10-2012, 06:54 PM   #1
ABerry
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07 e92 335 water pump failure story

I wanted to share my story to help others who may have the problem. Yesterday I start noticing intermitent power loss like limp mode with no warnings or indicators from the ecu (never had this problem before I've really had no issues except the turbo wastegate not even a hpfp failure I'm at 68k might now) . I restart the car and it goes away then comes right back. My engine fan sounds like a jet engine with the fan blasting for 20 seconds then off then on. Limp mode (with no errors) would come and go then I get on the freeway and I get a yellow engine overheat warning (temp is at 210 ambient temp is 45 degrees) and it immediately goes red I pull over and wait for 5 minutes. I am about 5 miles from the dealer and my engine was not hot so restart the car I fire up my Bluetooth obdII adapter and torque for android app to monitor coolant temp and it was normal also.. I get 1/8 mile from the dealer and the yellow engine overheat light comes on again.. still normal temps all around and I get to the dealer... I get a call today it was the electric water pump.. COVERED UNDER CPO

Hope this helps someone since this will probably start happening to 07's

Last edited by ABerry; 02-10-2012 at 07:00 PM.
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      02-10-2012, 08:16 PM   #2
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Nice to have the mileage and what was happening documented. These things go out between what 40-90k? Glad to hear the CPO covered it.
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      02-10-2012, 08:56 PM   #3
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Stories like this is exactly why I keep my car parked in the garage. It hasn't moved in 5 weeks. Nothing is gonna break in the garage. Which reminds me time to hook up the battery tender.
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      02-10-2012, 09:06 PM   #4
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This scares me. My 07 has 72k. I hope I don't have problems during the upcoming track season.
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      02-10-2012, 09:31 PM   #5
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How many miles? I have an 06 and have been pondering this too. Where did you take it, Kuni? I live in Newberg and they have always treated me fantastically.
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      02-12-2012, 07:15 PM   #6
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Originally Posted by MikeS '06 330i View Post
How many miles? I have an 06 and have been pondering this too. Where did you take it, Kuni? I live in Newberg and they have always treated me fantastically.
kuni is my main dealer and I went to them for this issue. I went to Portland BMW for my regular service for the first time a month ago just because i hadnt before and i wanted a comparison. Man was i dissapointed. Kuni is night and day better but dont get me wrong, mercedes benz of wilsonville will make you feel like you own a ferrari, but Kuni is definitely the go to BMW shop. Much nicer people, i feel like Portland may have not done what they said, when i got the car back it was half washed, it was terrible it would have been betterbif it wasnt washed, they were absolutely packed and i really felt like i was at a chevrolet dealer the way i was treated.. sry for spelling/gramatical errors, im on my phone

Here is a video i created of the engine fan on full blast. This was my first sign even though all temps were normal.. it would come on for 20 seconds then go off for 20

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      02-12-2012, 07:23 PM   #7
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Originally Posted by akotten View Post
This scares me. My 07 has 72k. I hope I don't have problems during the upcoming track season.
I had never had any overheating problems before and from my research i guess it just fails out of no where.. i dont track and i dont even drive hard ever.. the average temp in portland over the past 3 months is probably 50 degrees. I wouldnt worry but id make sure your covered via insurance or bmw for towing its just a safe thing to do
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      02-12-2012, 07:39 PM   #8
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Quote:
Originally Posted by ABerry View Post
I had never had any overheating problems before and from my research i guess it just fails out of no where.. i dont track and i dont even drive hard ever.. the average temp in portland over the past 3 months is probably 50 degrees. I wouldnt worry but id make sure your covered via insurance or bmw for towing its just a safe thing to do
Yeah, I've got AAA but I need to look through my service contract and see if this is covered.
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      02-12-2012, 07:50 PM   #9
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45k miles mine went

warranty just expired and mine went....pretty common failure and they are not cheap 800$ plus for thr pump and 140 for the thermostat, plus labour. Happened without warning leaving my wife stranded so much for this advanced electric watre pump technologly, I recently swaped out my mom's '99 e46 original as a maintenance item cost 100 bucks. Pretty disappointed in BMW engineering
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      02-12-2012, 09:57 PM   #10
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Mine just went three days ago... 08 e90 with 64k and no sign of failure... Price tag was 1450 but I did get the SA to drop it a little to 1370... Every dollar counts to save toward any other poorly engineered part lol
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      02-13-2012, 02:58 PM   #11
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Quote:
Originally Posted by ABerry View Post
I wanted to share my story to help others who may have the problem. Yesterday I start noticing intermitent power loss like limp mode with no warnings or indicators from the ecu (never had this problem before I've really had no issues except the turbo wastegate not even a hpfp failure I'm at 68k might now) . I restart the car and it goes away then comes right back. My engine fan sounds like a jet engine with the fan blasting for 20 seconds then off then on. Limp mode (with no errors) would come and go then I get on the freeway and I get a yellow engine overheat warning (temp is at 210 ambient temp is 45 degrees) and it immediately goes red I pull over and wait for 5 minutes. I am about 5 miles from the dealer and my engine was not hot so restart the car I fire up my Bluetooth obdII adapter and torque for android app to monitor coolant temp and it was normal also.. I get 1/8 mile from the dealer and the yellow engine overheat light comes on again.. still normal temps all around and I get to the dealer... I get a call today it was the electric water pump.. COVERED UNDER CPO

Hope this helps someone since this will probably start happening to 07's
Huh? this happened to my 07 back in late 2009..when I had like 36K miles on my 335i. Mine catastrophically failed though...car just turned off while driving..and that was it. It was dead. Oh, BTW, I had FIVE HPFP replacements too.
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      02-13-2012, 03:11 PM   #12
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How much would this fix cost if it were not covered under CPO?
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      02-13-2012, 03:12 PM   #13
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Mine went out at 69k. Water pump, t-stat and labor came out to about $850 and 2-year warranty from the dealer.
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      02-13-2012, 03:41 PM   #14
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wow 850$ you got a deal....I heard some folks paid up to 1900$ at the stealer and some were quoted higher than that. There was a thread on bimmerforums about what people paid and even the DIY'ers paid more than 850$
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      03-22-2013, 05:33 AM   #15
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Mine just died last night too. I have a 2008 e92. I guess that I'm lucky that it made it all the way to 104k miles lol. I ordered the water pump for $460 from parts geek and the thermostat for $75 from rock auto. I'm pretty sure I can do it on my own luckily. I'll let you know how long the labor takes me.
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      03-22-2013, 06:29 AM   #16
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Quote:
Originally Posted by beantown256 View Post
Mine just died last night too. I have a 2008 e92. I guess that I'm lucky that it made it all the way to 104k miles lol. I ordered the water pump for $460 from parts geek and the thermostat for $75 from rock auto. I'm pretty sure I can do it on my own luckily. I'll let you know how long the labor takes me.
^Can you take pics and write up a DIY as well? This will no doubt help others when they experience this. So crazy to have this happen at such low miles.
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      03-22-2013, 06:51 AM   #17
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^There are many DIYs already for this. Use the search function to find them in the DIY guides forum.
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      03-22-2013, 10:32 AM   #18
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At 67K mine was about to go and had the waterpump and tstat replaced. my indy dealer pulled waterpump and tstat codes. I had it checked immediately after hearing my radiator fan go full blast like a jet engine when driving in stop and go traffic. It seemed my tstat failed in an open position and my waterpump was still working intermittently. So after a new waterpump, thermostat, and coolant I'm out $1K since I'm out of CPO. A little disappointing that BMW used this electric waterpump which only saves less than a handful of hp. The original waterpump on my e36 which I had before and sold to my dad still has its original waterpump at 170K. Disappointed to the point that this may be my last BMW ever.
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      03-22-2013, 12:24 PM   #19
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The complexity of engines increases with each new platform. Today's high-efficiency, high-performance, computer-controlled engines have different requirements than the older (mostly) mechanical ones. Gone are the days where simpler engines could be cooled by a continually running mechanical water pump. Modern engines require a higher degree of control over the flow of coolant to modulate the temperature based on driving conditions - particularly turbocharged engines.

If you want to criticize BMW for their electric water pumps, focus on the difficult-to-reach location, or the inferior OFH gasket that eventually deteriorates and sends bits of hardened rubber into the cooling system where they meet the high-speed impeller on the electric water pump.
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      03-22-2013, 05:21 PM   #20
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This has been happening for years now. Check the search.

Mine went at 58K.
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      03-24-2013, 07:17 AM   #21
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Interesting thread on bimmerforums:

http://forums.bimmerforums.com/forum...ric-water-pump
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      03-24-2013, 01:51 PM   #22
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Hey guys, I wrote up some observations that me and my buddy had while replacing our water pumps yesterday for his 330i and my 335xi if you want to take a look.

http://www.e90post.com/forums/showthread.php?t=819552
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