Water Pump

DarthColin · 04-10-2019, 12:40 PM

Hi everyone, my 1M left me on the side of the road for the first time two days ago, due to water pump failure.
I was 2 km from home when the amber engine overheat warning appeared. While wondering if I could limp the rest of the way home, the red warning came on five seconds later. I promptly pulled over and shut down. There was coolant in expansion tank area, and in right front wheel well.
I had it flat decked home, then flat decked to the dealer the next day.
When the codes and faults were checked, there was "coolant pump sticking" and "coolant pump shut down" faults. The pump is worth $800 Canadian in case you're wondering. Yikes.
Here's a few pictures:

CarJunkie · 04-10-2019, 04:15 PM

How many miles?

I have seen 60k as a recommended replacement mileage even with no problems for this very reason. I will likely do it next winter when I expect to be close to 55k since I track the car.

nachob · 04-10-2019, 04:49 PM

Yeah common issue. We don't see it as much because we don't drive as much but e90s, 135 and 128s get it. You might as well replace radiator hoses and thermostat as you do that too.

DarthColin · 04-10-2019, 05:36 PM

My car has north of 143000 km. Service adviser said very common. He said common pump assembly for N54, N55 engines. I suspect other engines as well. Had the pump in stock, and mentioned that's because they frequently pack it in at this age, or earlier.
The impeller and housing are made of plastic, hence why it wears. I kept the old pump. Maybe I'll make a disassembly video.

10" · 04-10-2019, 08:49 PM

Quote:

Originally Posted by CarJunkie

How many miles?

I have seen 60k as a recommended replacement mileage even with no problems for this very reason. I will likely do it next winter when I expect to be close to 55k since I track the car.

5 or 6 years of 60k miles. it's an electric water pump so it just has a certain lifespan.

rad doc · 04-11-2019, 11:34 AM

Quote:

Originally Posted by 10"

Quote:

Originally Posted by CarJunkie

How many miles?

I have seen 60k as a recommended replacement mileage even with no problems for this very reason. I will likely do it next winter when I expect to be close to 55k since I track the car.

5 or 6 years of 60k miles. it's an electric water pump so it just has a certain lifespan.

Yep, normal wear item. Preemptively replaced my at around 60k. Should be considered routine maintenance.

Yellowceta · 04-11-2019, 04:32 PM

Mine lasted 166,000 miles before giving it up.

abb6027 · 04-11-2019, 06:53 PM

Mine only lasted about 55,000 kilometres

ayao · 04-11-2019, 08:36 PM

Quote:

Originally Posted by Yellowceta

Mine lasted 166,000 miles before giving it up.

You need to post up in the "Most Miles" thread with a pic of the odometer!

duder13 · 04-12-2019, 09:18 PM

On my N55 135i, the water pump, OFHG and charge pipe all went out between 40k-44k miles. Bring on the HPFP!

On my Porsche 996, the water pump went out at about the same mileage, too!

nachob · 04-15-2019, 01:58 PM

Quote:

Originally Posted by duder13

On my N55 135i, the water pump, OFHG and charge pipe all went out between 40k-44k miles. Bring on the HPFP!

On my Porsche 996, the water pump went out at about the same mileage, too!

Sometimes I think Germany should've stuck with air cooled!

04-10-2019, 12:40 PM	#1
DarthColin First Lieutenant 44 Rep 324 Posts Drives: 2011 1 Series M Coupe Join Date: May 2009 Location: Grenfell, SK iTrader: (0)	Water Pump Hi everyone, my 1M left me on the side of the road for the first time two days ago, due to water pump failure. I was 2 km from home when the amber engine overheat warning appeared. While wondering if I could limp the rest of the way home, the red warning came on five seconds later. I promptly pulled over and shut down. There was coolant in expansion tank area, and in right front wheel well. I had it flat decked home, then flat decked to the dealer the next day. When the codes and faults were checked, there was "coolant pump sticking" and "coolant pump shut down" faults. The pump is worth $800 Canadian in case you're wondering. Yikes. Here's a few pictures: Attached Images __________________ ‘If it even looks like rain and you pretend to be Michael Schumacher in a 599 GTO, you’ll end up in a tree’ -Clarkson
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04-10-2019, 04:15 PM	#2
CarJunkie Colonel 2617 Rep 2,819 Posts Drives: e82 1M, f87 M2cs Join Date: Nov 2011 Location: Tri-Cities, Washington iTrader: (1) Garage List 2020 M2cs [0.00] 2011 BMW 1M [0.00]	How many miles? I have seen 60k as a recommended replacement mileage even with no problems for this very reason. I will likely do it next winter when I expect to be close to 55k since I track the car. __________________ 1M track toy mods: BMS chargepipe, BMS OCC, ADE FMIC, ADE motor mounts, MadDad/Lightweight Ti exhaust, ADE custom oil thermostat/cooler, custom MHD tune, F10 550i clutch, Ohlins R+T, Vorschlag camber plates, M3 'vert FSB with Turner endlinks, Stoptech Trophy BBK.
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04-10-2019, 04:49 PM	#3
nachob Brigadier General 2314 Rep 4,341 Posts Drives: 2004 330i ZHP, 2022 Cayman T Join Date: Apr 2008 Location: California iTrader: (5)	Yeah common issue. We don't see it as much because we don't drive as much but e90s, 135 and 128s get it. You might as well replace radiator hoses and thermostat as you do that too.
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04-10-2019, 05:36 PM	#4
DarthColin First Lieutenant 44 Rep 324 Posts Drives: 2011 1 Series M Coupe Join Date: May 2009 Location: Grenfell, SK iTrader: (0)	My car has north of 143000 km. Service adviser said very common. He said common pump assembly for N54, N55 engines. I suspect other engines as well. Had the pump in stock, and mentioned that's because they frequently pack it in at this age, or earlier. The impeller and housing are made of plastic, hence why it wears. I kept the old pump. Maybe I'll make a disassembly video. __________________ ‘If it even looks like rain and you pretend to be Michael Schumacher in a 599 GTO, you’ll end up in a tree’ -Clarkson
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04-11-2019, 04:32 PM	#7
Yellowceta Private First Class 45 Rep 108 Posts Drives: 2011 VO 1M Join Date: Aug 2011 Location: Keller, TX iTrader: (0) Garage List 2011 BMW [0.00]	Mine lasted 166,000 miles before giving it up. __________________ 1996 Trans Am WS6 (RiP) 2002 Trans Am Collector Edition WS6 - Not Stock @ 425 rwhp 2006 VW GTi - APR Goodies - Sold 2011 1M - VO Florida pick up 11/4/11 #554 of 740 - Sold 2017 ATS-V Stock
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04-11-2019, 06:53 PM	#8
abb6027 Enlisted Member 18 Rep 49 Posts Drives: 2012 1M Join Date: Nov 2010 Location: Wollongong, Australia iTrader: (0)	Mine only lasted about 55,000 kilometres
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04-12-2019, 09:18 PM	#10
duder13 Captain 767 Rep 904 Posts Drives: Cashmere Join Date: Mar 2018 Location: US iTrader: (0)	On my N55 135i, the water pump, OFHG and charge pipe all went out between 40k-44k miles. Bring on the HPFP! On my Porsche 996, the water pump went out at about the same mileage, too!
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