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Removing your BMW Engine Cover
 
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Pelican Technical Article:

Removing your BMW Engine Cover

Nick Czerula

Time:

5 hours5 hrs

Tab:

$0

Talent:

***

Tools:

Set of sockets (8mm), T40 Torx socket flathead, Phillips screwdrivers

Applicable Models:

BMW E90 3-Series (2006-11)
BMW E91 3-Series (2006-12)
BMW E92 3-Series (2007-13)
BMW E93 3-Series (2007-13)

Parts Required:

Engine cover fasteners (if you lose one)

Hot Tip:

Work with a cool engine.

Performance Gain:

Access to engine

Complementary Modification:

Replace cabin microfilter while it is out

When servicing your BMW E90 engine, you may have to remove the cabin microfilter housing and engine covers to access specific components. In this article, I will show you how to remove the covers, providing easy access to the top and rear of engine.

Remove six 8mm cabin microfilter lid fasteners (green arrows).
Figure 1

Open engine hood. Remove six 8mm cabin microfilter lid fasteners (green arrows).

Lift lid up and remove from cowl.
Figure 2

Lift lid up and remove from cowl.

Working at right side of engine compartment, remove air quality (AUC) sensor by rotating sensor counterclockwise and pulling out of cowl.
Figure 3

Working at right side of engine compartment, remove air quality (AUC) sensor by rotating sensor counterclockwise and pulling out of cowl. (green arrow)

Then unclip wiring harness from cowl and lay aside.
Figure 4

Then unclip wiring harness from cowl and lay aside. (green arrows)

Working at right side of engine compartment, unclip E-box cover and remove.
Figure 5

Working at right side of engine compartment, unclip E-box cover and remove. There are two clips to release indicated by green arrows.

Then, detach rubber tab (green arrow) and remove E-box cover from vehicle.
Figure 6

Then, detach rubber tab (green arrow) and remove E-box cover from vehicle.

Working at left side of engine compartment, unclip brake fluid cover and remove.
Figure 7

Working at left side of engine compartment, unclip brake fluid cover and remove. This is similar to removing the E-box cover on right side.

Working at center of wiper cowl, open wiring harness cover by detaching locks (green arrows), then pull wiring harness cover off and remove.
Figure 8

Working at center of wiper cowl, open wiring harness cover by detaching locks (green arrows), then pull wiring harness cover off and remove.

Pull wiring harness and battery cable out of bracket and lay aside.
Figure 9

Pull wiring harness and battery cable out of bracket and lay aside. (green arrows)

Then you will have to detach the bracket for the wiring harness that runs under the cowl.
Figure 10

Then you will have to detach the bracket for the wiring harness that runs under the cowl. Use a flathead screwdriver and lever the bracket open through the top of cowl. (green arrows)

This photo shows what the lower wiring harness bracket looks like and the areas you have to unclip.
Figure 11

This photo shows what the lower wiring harness bracket looks like and the areas you have to unclip. (green arrows)

Working at left side of cowl, remove rubber tab (yellow arrow), then remove 8mm fastener (green arrow).
Figure 12

Working at left side of cowl, remove rubber tab (yellow arrow), then remove 8mm fastener (green arrow). Then repeat steps for right side of cowl.

Pull housing up and forward to remove from vehicle.
Figure 13

Pull housing up and forward to remove from vehicle.

Remove five T40 Torx engine cover fasteners (green arrows) by rotating 90° counterclockwise, then remove cover from engine.
Figure 14

Remove five T40 Torx engine cover fasteners (green arrows) by rotating 90° counterclockwise, then remove cover from engine. When installing, do not over-torque fasteners and check that lower cowl in properly aligned. A water leak can develop if not seated and sealed properly. Install in reverse order of removal.

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Comments and Suggestions:
pete Comments: Please explain, What and where water leak is possible per figure 14 of above procedure?
May 9, 2016
  Followup from the Pelican Staff: if the lower cowl is not aligned, water can leak from the cowl onto the engine. That is the note in the article. - Nick at Pelican Parts  
Peter Comments: Do you have a link or video for Bmw 328i 2008 sedan for changing your front and rear brake pads and brake sensor?thank you.
February 10, 2016
  Followup from the Pelican Staff: Article is here:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/BRAKES-Brake_Pads_Replacement/BRAKES-Brake_Pads_Replacement.htm - Nick at Pelican Parts
 
Peter Comments: Whats the best brake pad for my bmw 328i sedan 2008?when changing brake pads do i need to change the brake sensor too?
February 9, 2016
  Followup from the Pelican Staff: You will need the sensor. All the pads are here: (listed by price and quality)

http://www.pelicanparts.com/cgi-bin/supertech/catalog.cgi?action=frameset&return-url=/cgi-bin/supertech/catalog.cgi%3Faction%3Dframeback%26page%3D1150&catalog-url=http%3A%2F%2Fwww.pelicanparts.com%2Fcatalog%2FSuperCat%2F4139%2FBMW_4139_BRKPAD_pg1.htm %3Futm_source%3DSuperTech%23item0 - Nick at Pelican Parts
 
Peer Comments: Would you fellas happen to know the torque values for the acoustic cover? Thanks in advance
February 1, 2016
  Followup from the Pelican Staff: I don’t have that info.



I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
Peter Comments: I have bmw 328i 2008 sedan.and my filter housing is leaking.can you give me a link the removal of the filter housing.and tools.thank you
January 27, 2016
  Followup from the Pelican Staff: http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/ENGINE-Oil_Filter_Housing_Gasket_Replacement/ENGINE-Oil_Filter_Housing_Gasket_Replacement.htm - Nick at Pelican Parts  
Peter Comments: My bmw 328i 2008 sedan has engine leak.and need to change.how bad is your if you this leak?is this safe to use or not?
January 21, 2016
  Followup from the Pelican Staff: It is bad and can cause major engine damage. Repair the leak. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Peter Comments: How much is your Eccentric shaft sensor for bmw 328i 2008 sedan?i need to change my sensor.thats the reading of the codes when i run my diagnostic tool.i called bmw parts and its expensive.
January 13, 2016
  Followup from the Pelican Staff: Parts are here: http://www.pelicanparts.com/cgi-bin/supertech/catalog.cgi?action=frameset&return-url=/cgi-bin/supertech/catalog.cgi%3Faction%3Dframeback%26page%3D1180&catalog-url=http%3A%2F%2Fwww.pelicanparts.com%2Fcatalog%2FSuperCat%2F4139%2FBMW_4139_BASFLT_pg4.htm %3Futm_source%3DSuperTech%23item15

If you have trouble narrowing it down, Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Peter Comments: How to remove your antenna cover or shark fin for Bmw 328i sedan 2008?can you give me a link video how to do it.thanks
January 12, 2016
  Followup from the Pelican Staff:
We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
kaj Comments: 5 hours 😯 Is there something horrible on these engines ? Any Special tools Needed, This is a scary time the e46 330i take around 1 hour 😐 Thanks for your reply
January 7, 2016
  Followup from the Pelican Staff: I apologize. 5 hours was referring to the engine valve cover. These engine covers take about an hour to remove. - Nick at Pelican Parts  
kaj Comments: Hi, i have to change a rocker cover on a 330i 2009 e90 coupe ive changed loads of the e46 6 pot rocker covers i understand its a different engine but auto dater book time is nearly 4 hours is this over stated is there special tools needs or something horrible that needs to be removed thats a pain many thanks
January 7, 2016
  Followup from the Pelican Staff: The time is correct. It should be one hour, maybe a little more if you haven't done it before. - Nick at Pelican Parts  
Peter Comments: When changing your eccentric shaft sensor do i have to disconnect my battery connection?or changing spark plug?
December 30, 2015
  Followup from the Pelican Staff: You should disconnect your battery when you work on the vehicle electrical system. - Nick at Pelican Parts  
Joe Comments: The light is not on.
November 12, 2015
  Followup from the Pelican Staff: What light? - Nick at Pelican Parts  
tim Comments: how to remove and reinstall valvetronic motor
June 11, 2015
  Followup from the Pelican Staff: Assuming you mean for an E90:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/FUEL-Valvetronic_Motor_Replacing/FUEL-Valvetronic_Motor_Replacing.htm - Nick at Pelican Parts
 

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Page last updated: Sun 8/28/2016 02:24:35 AM