E90 - I kinda messed up

ngoako7

Member
So it started out as a squeak on cold startup. Just thought my car didn't like winter, js like the owner :sleep:
It then turned into a power steering judder + squeak on cold startup. At this point, I'm fearing the worst, power steering pump.

I then start to search for power steering flush diy on the web so I can at least do that before replacing the pump. :fencelook:

Then this past sunday, I moved the car and the steering wheel was worse, and now there was burnt rubber smell. Popped the hood, had a look around the belts, checked if they are loose or anything, visually inspected the vibration damper - looked solid (considering it's a pirate part).

I had a closer look at the belts and voila - cracks on power steering belt.
2014-08-12125626.jpg

At this point, I'm chuffed cause I'm 99% sure I've found the root cause of all these PS issues. I order a belt from dealer - got a nice discount, and picked it up today.

When I got home, I went straight to the car, and started removing the old belt which was a challenge, so I figured I need to turn the crank with a 22" socket on a ratchet with one hand, while removing the belt with a screwdriver with the other hand.

I put the socket/ratchet in and figured I needed to have the car in neutral(Auto), so I can turn the crank by hand.
So I leave the ratchet on the crank bolt, and head into the cabin. Try and shift into neutral with the car off, nope gearbox is locked, so without thinking, i start the car so I can change into neutral, and there was a loud bang in the engine :flyfun:

So I switch off the car and head up front, and lo and behold - I've got a hole in my air tube. Part number 3 on below diagram - sorry didnt take a pic as I was panicking at this stage.
241.png

So what happened is when I started the engine, the ratchet spun onto the airtube and punctured a hole into it which is about 5cm long. Silly mistake that.
Anyways, I went ahead and put on the new PS belt, and my PS has never been smoother, and squeak is gone, but now i have to find an airtube.
 

DieselFan

Honorary ///Member
So are you driving with a hole in the intake pipe? I hope you got every single piece of plastic that fell inside....

The aftermarket dampers don't last from what I have been told.
 

ngoako7

Member
4cefed6 said:
We all learn from mistakes
Hopefully this one does not cost too much

I think I'll get one from breakers if dealers are expensive. In my opinion, this is not a wear and tear item so it "shouldn't" make a difference whether I buy new or used. I'm open to scrutiny here.


DieselFan said:
So are you driving with a hole in the intake pipe? I hope you got every single piece of plastic that fell inside....

The aftermarket dampers don't last from what I have been told.

Car is currently parked, wifey usually drives it as she is authorised to drive only an auto. So we currently using one car.

I'm going to remove the pipe tomorrow, and will take pics so I can upload on here.

RE Aftermarket damper - I wasnt expecting it to last this long cause I was broke and stranded when i bought it, so pleasantly surprised.
 

danieljames

Active member
The title of this thread made me laugh. Just a Lil bad luck there chap. Hope you get it sorted soon........being cautious not to break something else lol
 

Philip Foglar

///Member
CliftonH said:
Philip Foglar said:
Charlie Brown said:
Why are trying to turn the crank ?

You need to turn the tensioner pulley rather to release the belt.

^^

there is no tensioner for the power steering belt, lol

If this is the 320d M47N2 engine which it looks like based on the RealOEM pic above, then it most definitely does have a pre-tensioner and also uses a single serpentine belt. Check below:

 

ngoako7

Member
M47N2 doesnt have a tensioner on the power steering belt, and it has 2 separate belts. The vibration damper drives both belts, so if you wanted to get access to the sepentine belt(with tensioner pulley), then you need to remove the power steering belt first(without pulley).
See below:
195.png


Anyways, I managed to get a replacement airpipe today.
Damaged one on top.
Airpipe.jpg


Put back everything and took the car for a drive and all feels and sounds perfect again.
 

ngoako7

Member
Charlie Brown said:
Apologies wasn't aware that the diesels were different.

That must be tough to get off without a tensioner.

Yep, hence i had to turn the crank. BMW have a special tool used for removing the belt but that also requires turning the crank. So I used a screw driver as my special tool :idea: to remove the belt, while I was turning the crank
 
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