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Electric Water Pump Failure - Poll

Discuss problems you have had or are having with your Z4

Has your electric water pump failed (N52 engines - facelift)?

Yes
34
27%
Not yet
91
73%
 
Total votes: 125

keith777
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Electric Water Pump Failure - Poll

Post by keith777 » Wed Feb 07, 2018 9:11 pm

keith777 wrote: Wed Feb 07, 2018 9:07 pm
Sinkrate wrote: Sun Apr 30, 2017 2:07 pm I've got the pump down to £250 ish at https://www.gsfcarparts.com/ using the forum40 code.
Just need to find someone to fit it now and I'll buy it and get it sorted.
Try ducklakeview (edit above) a member on this site, located St. Helens I believe.
Cheers Keith.

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philbo909
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Electric Water Pump Failure - Poll

Post by philbo909 » Wed Feb 07, 2018 11:21 pm

mine was replaced before i bought the car, had died at 100k
Sapphire black z4 coupe 135,000miles young

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chutley
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Electric Water Pump Failure - Poll

Post by chutley » Tue Feb 19, 2019 7:01 pm

My car is a 2007 3.0si, so approaching 12 years old. Only has 29,000 miles - Sunday Car - and hasn't showed any cooling problems. But like the OP, I'm beginning to wonder whether I should get it changed...?
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basil the dog
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Electric Water Pump Failure - Poll

Post by basil the dog » Tue Feb 19, 2019 7:22 pm

The pump on my 2006 coupe beshat it's breaches last year at 108k, luckily it was at the beginning of a long journey.

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Mr Tidy
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Electric Water Pump Failure - Poll

Post by Mr Tidy » Tue Feb 19, 2019 7:47 pm

Well I already posted about my E86.

But my daily 325i also has an N52 engine. That water pump died 6 months after I bought it. :headbang:

Still it looks like it made it to 12 years and 135K miles as it's only ever been to main agents (15 visits in all) and neither of them had replaced a water pump! Maybe they last longer doing higher miles?
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Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
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chutley
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Electric Water Pump Failure - Poll

Post by chutley » Wed Feb 20, 2019 10:55 am

https://www.ebay.co.uk/itm/PIERBURG-WAT ... 2749.l2649

£227 for water pump, and two hours labour @£50ph at local Indy to fit. Seems like a no brainier for peace of mind. Never intend selling car, so booked it in.
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scootr
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Electric Water Pump Failure - Poll

Post by scootr » Wed Oct 02, 2019 3:33 am

I know~ old thread. Search engine will do that to you :P
My new to me E89 has a N52 motor with 61,000 miles on it.
How can I tell if the water pump is original or has been changed?
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ph001
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Electric Water Pump Failure - Poll

Post by ph001 » Wed Oct 02, 2019 9:47 am

If you don't have a receipt to show it there is no way of knowing. I think what would also be interesting to see on this poll is what percentage of N52K (black top engines) owners have had water pumps fail. There was some rumour around that the pump was modified for the N52K but the details are very sketchy.
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Mr Tidy
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Electric Water Pump Failure - Poll

Post by Mr Tidy » Wed Oct 02, 2019 8:49 pm

Well if it was modified, didn't help!

The pump on my 1st E86 died at 60K and 9 years - and that had a black-top engine. :(
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black

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Electric Water Pump Failure - Poll

Post by Sgub » Wed Oct 02, 2019 9:08 pm

scootr wrote: Wed Oct 02, 2019 3:33 am I know~ old thread. Search engine will do that to you :P
My new to me E89 has a N52 motor with 61,000 miles on it.
How can I tell if the water pump is original or has been changed?
This might be total nonsense, however I seem to recall someone mentioning that from the factory, the bolts holding the waterpump in place have some blue (glue?) stuff on them. Chances are with a replaced pump this hasn't been done again, especially by an indy..

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Mr Tidy
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Electric Water Pump Failure - Poll

Post by Mr Tidy » Wed Oct 02, 2019 9:40 pm

Sgub wrote: Wed Oct 02, 2019 9:08 pm This might be total nonsense, however I seem to recall someone mentioning that from the factory, the bolts holding the waterpump in place have some blue (glue?) stuff on them. Chances are with a replaced pump this hasn't been done again, especially by an indy.
Anything bolted to the engine block on the N52 has bolts with a blue blob on the heads to identify them as single use aluminium bolts.

But I believe the pump kit from Pierburg comes with new bolts, and as they made the OEM pumps the new bolts might have blue on them too!

If anyone has done a DIY pump replacement they should know for sure.
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black

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scootr
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Electric Water Pump Failure - Poll

Post by scootr » Wed Oct 02, 2019 10:04 pm

Sgub wrote: Wed Oct 02, 2019 9:08 pm
scootr wrote: Wed Oct 02, 2019 3:33 am I know~ old thread. Search engine will do that to you :P
My new to me E89 has a N52 motor with 61,000 miles on it.
How can I tell if the water pump is original or has been changed?
This might be total nonsense, however I seem to recall someone mentioning that from the factory, the bolts holding the waterpump in place have some blue (glue?) stuff on them. Chances are with a replaced pump this hasn't been done again, especially by an indy..
Thank you - I'll have a look and see.
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Electric Water Pump Failure - Poll

Post by dgmx5 » Mon Nov 23, 2020 8:30 am

Another one to suffer, albeit at 142,000 miles (don't know if it was replaced earlier in its life by a previous owner but we have had the car for over 6 years).

Bought the Pierburg pump (11517586925, £249.59, comes with the one time use only bolts with it) and Mahle Behr TM1497 thermostat (£58.99 plastic unlike the original metal one) from bmwmotormec on ebay.

Had the car serviced (oil change, air filter, spark plugs replaced) at the same time as having the pump and thermostat replaced and total labour was £185.00 + vat from my local garage near Canterbury. So all in, price should be no more than £500 and I see plenty on here having it done for less. No issue identified with the thermostat, but replaced it as a preventative measure whilst the pump was out.

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Electric Water Pump Failure - Poll

Post by Chickendippers » Mon Nov 23, 2020 1:52 pm

Around 120k and cost £1000 to fit at the dealer. Managed to limp it to the dealer which was only 5 miles away thankfully. it was on my list of things to do with my indy but was waiting for a cheaper insp1 to do at the same time. In the end i did an Insp2 followed 2x weeks later by the water pump. Lean times.
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Electric Water Pump Failure - Poll

Post by Smartbear » Mon Nov 23, 2020 2:58 pm

Chickendippers wrote: Mon Nov 23, 2020 1:52 pm Around 120k and cost £1000 to fit at the dealer. Managed to limp it to the dealer which was only 5 miles away thankfully. it was on my list of things to do with my indy but was waiting for a cheaper insp1 to do at the same time. In the end i did an Insp2 followed 2x weeks later by the water pump. Lean times.
You paid a grand to get the water pump fitted? Please tell me that’s a mistake.
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e89 Sdrive 30i, this ones busted, pass me another...
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