BMW N42B20 and N46B20 WATER PUMP and POWER STEERING PUMP replacement E46 E90

Not your classis DIY video but I tried my best to show you guys how to replace Water Pump and/or Power Steering Pump in your BMW e46 or e90 N42/N46 engine. Hope this video will help some of you!
This is quite simple repair so I believe that you can do it yourselves 💪
Let me know in case you need some more information!
Follow me on INSTAGRAM for more
/ gorilla.project.car
#waterpump #n42b20 #n46b20

[@mickqueensland1204]

Very Helpful, thanks so much. I was about to start on a cooling system overhaul in my 318i with an N42 engine when I discovered that the PS pump was interconnected with the Water Pump... First time I have seen that. Thanks again.

[@gorillaprojectcar]

It was first time for me too but I guess they saved some space with this 🤷🏼‍♂️ it’s not that bad and compared to other n42 things this pump is very reliable. I’m glad I could help 💪

[@bmw1461]

Nice video :) it's a strange engine - i have that one and i changed a lot of parts. I hope that water pump will work for a long time

[@gorillaprojectcar]

Thanks a lot 🙌 Fortunately I’ve never had issues with water pump. Let’s hope it’ll stay that way. This engine has its problems but overall I kinda like it. Maybe it’s a Stockholm syndrome but who would care 😂😅

[@WayToManyAssassins]

Better than the electric water pump on the N52

[@oliverpenny5970]

Fantastic video. Mine is leaking from where the waterpump plugs into the engine, I couldn’t find any videos on this waterpump. Just the electric waterpump! Maybe mention E90 in the title or tags, I had to go on Wikipedia and find what engine I had to find this video. Thank you very much. (From England, UK).

[@gorillaprojectcar]

Great suggestions 😉 I’ll do that and I’m glad I could help 🙌

[@TylerMartin-bf9yb]

Thanks for the video I figure the pump was where and operated where it was. I work on American vehicles. But for the power steering pump pulley his it with a rubber mallet at the very least. If you don’t have one use a rag as a dampener

[@ahojahoj3720]

Thank you wery much, you helped me as hell, subscribed, and liked, its first vid from your chanel that i saw and its perfect, im your new fan man!

[@gorillaprojectcar]

That’s so nice to hear. I’m glad you found the video helpful! Cheers 🫡

[@Hardee03]

Thank you for the video I have bought a used n42 engine and it is now in the auto workshop for an overhaul.. Engine transplant will be done this week..

[@gorillaprojectcar]

What happened with the old engine?

[@Hardee03]

@@gorillaprojectcar It was scheduled to be overhauled but it has a crankshaft and connecting rods problem so the next best option is to buy a good used engine luckily i found one on ebay with 80K Kms on it only for 400Eu...

[@gorillaprojectcar]

@@Hardee03 and with your old engine you will have a bunch of spare parts. I did very similar thing few years back ;) just my engine needed other parts :)

[@pascalfdez]

Thank you for the videos bro...currently working on a n46 overheating issue...cheers from Isla Mujeres, Mexico!

[@gorillaprojectcar]

No worries! If you need any videos let me know. Also keep me posted on your n46! Cheers 🙌

[@andrzejrutkowski8699]

W silnikach n42/45/46 nie trzeba demontować pompy wspomagania aby wymienić pompę wody. Wystarczy zdjąć pasek odkręcić koło pasowe pompy i po opróżnieniu układu chłodzenia odkręcić dwie śruby łączące pompy razem. Króciec który wchodzi w blok jest na wcisk jak widać na filmie więc zbędna praca z układem wspomagania. Da się to zrobić także w drugą stronę bez demontażu całego zespołu pompy wody zmienić samą pompę wspomagania bez opróżniania układu chłodzenia. Dwa lewarki i trochę sprytu. Nic więcej.

[@gorillaprojectcar]

Hmm… 🤔 w sumie ma to sens przy pompie wody, faktycznie jak się zastanowić to powinno to być możliwe. Będę mieć dostęp do następnego n42 to sprawdzę czy dałbym radę to zrobić. Nie wiem jak ciężko byłoby odkręcić pompę wody od wspomagania. Co do zdejmowania pompy wspomagania bez pompy wody to na czym trzymałaby się pompa wody jeśli odkręcamy wspomaganie na którym się normalnie trzyma?

[@andrzejrutkowski8699]

@@gorillaprojectcar bez problemu pompę wody utrzyma króciec łączący blok silnika z pompą chyba że doszło tam już do wycieku i zachodzi podejrzenie że oringi są już do wymiany. Kilka dni temu zmieniałem pompę wspomagania w e87n45b16a właśnie bez demontażu pompy wody. Byłoby szybciej gdyby pompa wspomagania była z e46 n46 one z reguły mają wycięcia w kole pasowym na dojście do śrub mocujących pompę ale niestety nie wszystkie modele to posiadają.

[@gorillaprojectcar]

Mega informacja, dzięki wielkie! Następnym razem jak będę mieć możliwość zajrzenia do tego to na bank to zrobię. Nawet żeby spobie obejrzeć co i jak tam ;)

[@andrzejrutkowski8699]

@@gorillaprojectcar polecam się 👍

[@gorillaprojectcar]

Super :) Dzięki jeszcze raz ;)

[@andreyzozulya1181]

Thanks for video 📹 I have a question, I need to change power steering pump on my Bmw E 87 ,my choice was on Bosch power steering pump, what do you think about quality of Bosch?Because new one power steering pump on dealer Bmw cost 840 euro.

[@gorillaprojectcar]

Technically Bosch is one of the good ones. Most of the sensors that are OEM are made by Bosch. Power steering pump should be fine with most brands. The worst thing about choosing the right aftermarket is when it comes to electronic components 😉

[@andreyzozulya1181]

@gorillaprojectcar thank you for answer!

[@janmagalso]

You help me a lot good sir 😊

[@gorillaprojectcar]

Glad to hear it 🫡

[@AaronGopito]

Nice vid and you make it look so simple

[@gorillaprojectcar]

well that's what videos do. It is not simple for me. Keep trying tho and you'll be able to make anything with the car. it;s great passion, just expensive 🤦‍♂️

[@dimchostefanov7512]

What are the symptoms of a damaged water pump? Jaké jsou příznaky poškozené vodní pumpy? Какви са симптомите на повредена водна помпа?

[@gorillaprojectcar]

It can be few things. Most common is leaking. Second most common would be engine getting hot because water is not moved. Water pumps on this engines are good in my opinion. It’s very rare that you need to replace it 😉

[@gabrielliga]

I'm having a leak , a mixture coolant and steering oil as well, looks it comes from this duo water pump and steering oil pump; do you reckon it is better to change both pump or only the seals? No other problems seen - like heating, high temperature, uneven steering work. I've got only 100 000km done but the car has 22 years. Thanks

[@gorillaprojectcar]

It always depends on the budget. If you have money to replace them both and it won’t bother you then do it and you’ll feel safer. If not then I’d recommend to wash them, find the leak and replace what needs to be replaced. Probably a seal in water pump part and perhaps a hose in power steering pump. Cheers 👋

[@enchoshindev1015]

Hey dude. Do you know if e46 n42 engine power steering pump will fit to e90 320i n46 engine. They look absolutely the same, but realoem says, they wont fit. Whats ur opinion about it?

[@gorillaprojectcar]

Honestly I’d put it in. If it fits with the water pump I don’t see why it wouldn’t work 🤷🏼‍♂️

[@xD-ep3im]

Hi mate! Thanks for the video… the car was overheating so i wanted to change the water pump.. what i saw is that water pump is fine but the power steering pump seems to be damaged. If you spin the metall thing that connects to water pump then the pully wont move. So what you think?

[@gorillaprojectcar]

First of all your login is awesome 😂 my brain got so confused when I was the notification 😅 If the pulley is not spinning the shaft your water pump won’t move. So my advice would be to get another power steering pump. I disassembled one and putting it back together was the biggest challenge I had so new one or good used one is safer option. Let me know how it’s gonna go 💪 cheers

[@gianlucachetcuti2210]

Thanks for the video, there are not many videos about N42/46 engine available. I have a question regarding the powersteering pump. Is it normal if the shaft has some play axially (in and out) not side to side? My power steering pulley also seems to be making some squeaking noise but not sure if its normal. Great video and thanks!

[@gorillaprojectcar]

I think it shouldn’t move too much but I’ll check both of mine tomorrow and let you know ;) Try spraying some wd40 on the belt. If it becomes quiet it might be a belt that’s making this noise :) Thanks for the comment and for watching the video 💪🔥

[@gianlucachetcuti2210]

@@gorillaprojectcar Thanks, well I removed the belt temporarily and the noise wasn't there anymore. I know the belt isn't very old. Pity there isn't a lot of information about these engines and their parts, I searched and contacted ZF & Bosch and they don't make rebuild kits for this pump. I would much rather rebuild it then buy a new one. I found your channel today and keep up the great work.

[@gorillaprojectcar]

Thanks a lot for your kind words mate! I also prefer to rebuild my stuff then buying new ones. It’s much more fun. I haven’t had a need to find rebuild kits for power steering pump yet. I’ll try to search and maybe I’ll find something ;)

[@gorillaprojectcar]

I tried to find a rebuild kit for it but unfortunately I didn’t… and no one replied as well 😞 Maybe it’ll be a cool video to take my spare power steering pump apart 🤔 and see what you’d actually need? 🙃

[@gianlucachetcuti2210]

Hey man thanks for checking, yeah there aren't any rebuild kits yet. If your spare pump works, don't disassemble it (unless you think you can rebuild it again ;) ) but just check for any free play in the shaft and let me know if you can. It would be a nice video idea as there isn't any on the internet as far as I am concerned! Thanks for your interest

[@noorazlannoordin9670]

Thanks buddy..

[@gorillaprojectcar]

Anytime 💪💪 if you need anything about n42/46 engines I’m here for you :)

[@kamil8079]

a uszkodzona pompa wody może wydawać dzwięki przy 2 tyś obrotów ?

[@MySkullzDented]

Great video, thanks☺️

[@gorillaprojectcar]

🫡

[@denzelcrocker4956]

Hey, do you think it is better to Change the whole waterpump or Just the gasket? Mine is running great, but already 7 years at least. The car was 4 years in A Garage and Just got a start one time at Month

[@gorillaprojectcar]

if it was filled with coolant and not water than gasket should be enough. hard to say tho 🤷‍♂️🤔

[@jonasglobys5473]

Many pulleys have holes to unscrew those two bolts without removing it👍

[@gorillaprojectcar]

Now that I think about it you’re actually right but if you’re replacing water pump the pulley has to be unbolted anyways 😉

[@jonasglobys5473]

@@gorillaprojectcar Why? That’s the point, you can remove the whole steering pump together with puley still on it. Have already done this before couple times, anyway it works only if the puley isn’t from those cheap ones (without holes) 😉👍

[@gorillaprojectcar]

I guess the water pumps don’t always come with new pulley. I can be wrong tho

[@arifzabri5798]

My power steering pump is leak at the center of the oval (football shape) connection to water pump oil came out of it.

[@gorillaprojectcar]

If the pump is leaking try to find a replacement one and replace it. Way easier than resealing the old pump. You can always give refurbishing a try but it’s just one of those cases where you’d spend lots and lots of time doing it.

[@adrianzielinski2224]

wymienialem ostatnio płyn chlodniczy. Nie odpowietrzalem niczego raczej. Pomagał mi wujek który siedzi w tematach samochodowych. Od 2 miesięcy wszystko git, chłodzi itp Problem mam z kierownicą właśnie bo od roku jak mam bmw e46 n42 to kierownica chodzi non stop tak ciężko że jedną ręką to minimum żeby nią kręcić. Czy w takim bądź razie muszę wymieniać znów cały płyn tzn. odkręcić pompę i zlać płyn i nalać nowy czy mogę od razu przejść do odpowietrzania czyli robię te wszystkie procedury z kreceniem kierownicą i popuszczam te dwie nakretki obok wlewu płynu chlodniczego. Mówiąc prościej, odkręcam korek od zbiorniczka, odkrecam lekko te dwie nakretki na przewodach gumowych i robie procedury tak jak mówiłeś na filmie. Czy jednak muszę zdjąć też pompę całą i jest to wymagane?

[@gorillaprojectcar]

Nie musisz demontować pompy żeby odpowietrzyć. Wystarczy zrobic procedurę ale nie jestem pewny ze odpowietrzania układu chłodzenia pomoże. Jak skręcasz koło maksymalnie to jęczy pompa? Zacznij może od wymiany płynu wspomagania i zobacz czy nie ucieka gdzieś płyn bo aż dziwne. Chyba ze masz oponę 255 na przodzie to byłoby w miarę zrozumiałe 😉

[@adrianzielinski2224]

@@gorillaprojectcar źle zrozumiałem 😅 nie ogarnalem że mam wogóle ten płyn od wspomagania bo nie mogłem go znaleźć i myślałem że to jakoś zintegrowane z chłodnica XD wymieniłem płyn ATF cały i w sumie chodzi jak chodziło. Da się jedną ręką kręcić ale jest opór.. taka precyzja jakby. Jest jak najbardziej okej tylko nie wiem czy ma chodzić jeszcze lżej czy tak jest git. Opony mam 255 19stki albo 245

[@The_BarQy]

If the water pump or the power steering pump fail, can this lead to power steering oil to mix with coolant?

[@gorillaprojectcar]

There is one shaft which could transport both fluids but I don’t think it’s possible that much. Like maybe 2% chances. There is pressure in both systems so if both leak they would leak outside as both system would push the fluid out and not suck something in. That’s my opinion tho 🤷‍♂️

[@The_BarQy]

@@gorillaprojectcar makes a lot of sense honestly, it seems like I'm going to have to face the ugly truth that I need a head gasket 😔

[@gorillaprojectcar]

I wiah you luck and hope you’ll get it sorted :)

[@notfirstyourlast]

Can you access it from the bottom?

[@gorillaprojectcar]

It’s doable 😉

[@notfirstyourlast]

@@gorillaprojectcar sway bar removal etc etc...ill have a look. Thanks

[@gorillaprojectcar]

I don't think sway bar has to be removed. Do you want to remove power steering pump or water pump?

[@notfirstyourlast]

@@gorillaprojectcar i was lucky man, found the leak. It wasn't the water pump. Was the manifold plastic plate on the back of the head. Broke my arm and did it by feel only..but did it hahahahaha

[@gorillaprojectcar]

@@notfirstyourlast congrats mate!! Good job 🙌

[@pukavita]

I'm not sure that I understand, does the N46 engine have a mechanical and also an electric water pump? Thanks.

[@gorillaprojectcar]

They do have mechanical one. There is an electric one too but it’s very small and works only when engine is off to move fluid into the cabin. It’s on the intake side of the engine and it’s attached to chassis 😊

[@pukavita]

@@gorillaprojectcar Oh, I see. Thanks for getting back to me so quickly!

[@gorillaprojectcar]

anytime :)

[@JustCause968]

1:10 R.I.P the mosquito 🤣🤣

[@gorillaprojectcar]

More than one has ben taken down that day 😂

[@Yihhhghhhh]

What key size do you use on 5:47 ? Is that E10 or T40 ?

[@gorillaprojectcar]

that's a T40 I think. Definitely not E10

[@Yihhhghhhh]

Tq..how about thermostat housing? Is that e5 key ?

[@gorillaprojectcar]

Dont remember unfortunately

[@nikolazmuk8050]

People please help!! Bmw e90 n46b20 How to properly vent the cooling system? The refrigerator is new, the pump is new, the thermostat and sensors are new. The pump is mechanical. Until what temperature should I wait? It gets up to 95 degrees for me and I'm still afraid to wait. Which screws to open and which to close? Heating at max Greetings from Croatia!!

[@gorillaprojectcar]

Put coolant in the car. Have extra coolant near. Start the car when it’s cold full heating on. Unscrew both bleeding screws. Start adding coolant until it starts leaking from the bleeding screw. Add a bit more coolant to make sure that it’s consistent flow from the bleeder. Screw in the bleeding valve. Now you should see that the higher valve is leaking coolant. Again if not consistent add more coolant and screw it in. Hope it helps. If you will still have issues you can try having someone rev the engine a bit because sometimes there is an air pocket in the system. You can also try to raise the front of the car a bit to ensure that the higher bleeding valve is the highest point of cooling system.

[@nikolazmuk8050]

Thanks💪✌️

[@nikolazmuk8050]

And tell me when the coolant fan should come on? My tmp its 99 celsius and went not on.

[@gorillaprojectcar]

This one im not really sure. I think up to 105 is fine as there are thermostats that open at 105 in some n46 engines.

[@nikolazmuk8050]

@@gorillaprojectcar tnx 👍👍✌️

[@nicholasotway1382]

Where do you place the two o-rings

[@gorillaprojectcar]

Which orings?

[@WikSpaw]

🫡

[@gorillaprojectcar]

🙌🙌🫡