[Kingtron]

Originally Posted by ThatRWD

I love how you ran to the front in that last video "I'm gonna catch you I'm gonna catch you I caught you."

loooool

[Kingtron]

Originally Posted by DarkNemesis

Kingtron you answered what I have been searching for.....I did the same water test....placing belt, pullies, and tensioner on order.

What Brand did you buy and from where....did you DIY or had a shop do it?
Thank in advance.

DN

I’ve replaced the following parts:

Part# 11287563927 Tensioner
Part# 11287628652 Belt
Part# 11287557851 Lower Idler Pulley
Part# 11287556251 Upper Idler Pulley

Original BMW parts, A shop did it.
Good Luck !

[Sgop335]

I Would be replacing mine soon. Is this kit ok? Or oem way to go? Thanks...

http://www.rockauto.com/catalog/more...561&cc=1433813

Its interesting you changed belt and tensioner in 2013. Did you replace those again or just the pulleys?

[Miko226]

Originally Posted by AndreiJOY

I'm 90% that sound comes from belt and the tensioner. The belt is making that noise because the tensioner's spring may be worn-out.

This was my case, you could give it a try.

All the best

+1

Mine just started making this noise but not on startup im swapping belt, tensioner, idler pulley out this week

[Kingtron]

Originally Posted by Sgop335

Its interesting you changed belt and tensioner in 2013. Did you replace those again or just the pulleys?

I have replaced the belt and the tensioner only in 2013
maybe it was bad installation.

[BashShah]

I just finished belt, tensioner, upper and lower pulley yesterday.
Writing up a diy for all. Will be pic heavy.
Apparently there is none for n54.
I should be done by tomorrow end of day.

Quick procedure.
Drop belly pan.
Raise car so you can get under it.
Drain coolant....really.
Remove fan bottom screw.
Remove intake shroud to air filter box.
Disconnect and remove out of way rad to ofh pipe.
Remove expansion bottle line.
Remove rad fan upper screw.
Get fan out....2 clips....what a 2nd clip.
Remove pipe from ofh top end....hose that goes below to tstat.
Unclip hose and ac condensor line. Front of engine.
Unscrew fmci left pipe anchor screw.....shit that was before fan removal.
Unscrew air duct in front of engine but do not remove....just pull it toward....to give you room.

Now map...draw belt orientation.
Remove belt.
Remove upper and lower pulley and tensioner.

Reinstall pulleys first and tension last.
Reinstall new belt.

Now put it back together.

DN

[EJ_3]

Originally Posted by DarkNemesis

I just finished belt, tensioner, upper and lower pulley yesterday.
Writing up a diy for all. Will be pic heavy.
Apparently there is none for n54.
I should be done by tomorrow end of day.

Quick procedure.
Drop belly pan.
Raise car so you can get under it.
Drain coolant....really.
Remove fan bottom screw.
Remove intake shroud to air filter box.
Disconnect and remove out of way rad to ofh pipe.
Remove expansion bottle line.
Remove rad fan upper screw.
Get fan out....2 clips....what a 2nd clip.
Remove pipe from ofh top end....hose that goes below to tstat.
Unclip hose and ac condensor line. Front of engine.
Unscrew fmci left pipe anchor screw.....shit that was before fan removal.
Unscrew air duct in front of engine but do not remove....just pull it toward....to give you room.

Now map...draw belt orientation.
Remove belt.
Remove upper and lower pulley and tensioner.

Reinstall pulleys first and tension last.
Reinstall new belt.

Now put it back together.

DN

Can't wait to see the thread. Just in time for the holidays.

[BashShah]

Give me a bit, its a lot of work with pics
I just want to do it right the first time.

DN

[NewToBeamer]

As soon as you put that DIY up im doing it...my car is squealing from the belt at first I thought it was the oil from my oil filter housing and cooler so I replaced the gaskets and O ring but the sound is still there so im just replacing the whole belt assembly next

[matreyia]

Originally Posted by Kingtron

I have replaced the belt and the tensioner only in 2013
maybe it was bad installation.

There is a longitudal razor blade thin crack along your belt caused by the power steering pump pulley's inside teeth being damaged and/or missing. Do not replace with oem plastic pulley, replace with metal ppwer steering pulley and be sure the pulley does not contact subframe on potholes. Otherwise it will happen again and again...

You can order metal power steering pulleys from ecs tuning. Cheaper than plastic. The plastic one can crackle and chip away even new from the box if not careful handling it.

Same symptoms.... 4x I changed my belt and pulleys to no effect... then saw the power steering pulley issue.