DIY: Whews...Finally replace CPS intake - Bank 2 (Cyl 5-8) - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 6 Old 2nd October 2017, 06:08 PM Thread Starter
J Irwan
m5board.comoholic (>1000 posts)
 
J Irwan's Avatar
 
Join Date: Jan 2005
Location: Mid-West
Posts: 1,439
Thanks: 145
Thanked 283 Times in 134 Posts
Whews...Finally replace CPS intake - Bank 2 (Cyl 5-8)

The dreaded CPS code suddenly came. There was no SES light.
When I was going to accelerate the car hit a wall at around 3000 rpm, I pressed the accelerator pedal deeper and still nothing. The rpm seems stuck around 3000 rpm.

There were no other driveability issue, idle also smooth and stable.

So I pulled the code use peake reader:
08 - Intake Camshaft Pos Sensor #5-8
AA - secondary Air System, Flow to Low


So I reset again and went for a test drive, same thing again . seems stuck at 3000 rpm intermittently with no other driveability issue.
08 - Intake Camshaft Pos Sensor #5-8
71 -Intake Camshaft VANOS position control #5-8


And I know its time to replace the CPS Intake for bank 2 (#5-8)
I've studied as much as I can before start taking anything apart.
There are currently 2 DIY I found useful:


For your reference for US car, here is the order of difficulties in changing CPS:

1. Bank 2 (cyl #5-8) intake CPS - water valve hoses in the way + metal bracket - I did it from the top
2. Bank 1 (cyl #1-4) intake CPS - metal bracket in the way - I did it from the top
3. Bank 2 (cyl #5-8) exhaust CPS - water vale hoses in the way - I did it from the bottom
4. Bank 1 (cyl #1-4) exhaust CPS - nothing in the way -I did it from the top

And here is the picture (not my car) the back of an S62 which shows the location of the CPS(s)
intake CPS are circled in red
exhaust CPS are circled in yellow



I 've used the information from the 2 DIY mentioned above.

The only different, I decided to take the intake plenum off, to give me extra visibility.
I started with replacing Intake CPS on bank 2 (cyl #5-8) and end up replacing Intake CPS on bank 1, Exhaust CPS on bank 1, and also doing spark plugs while I have everything off. ( I do not want to take all of these parts apart again for another CPS )

Note: to echo DavidS's advise, study the location well as at times you'd have to feel the location without seeing it. Also be patient, and if you're stuck go away cool off and come back. On bank 2 intake CPS replacement when you put everything back its a bit tricky to position the black metal bracket between engine block and the the fuel line bracket. once you position it in between the next challenge is to line up all the holes. I found it easier to mount the bracket into the wiring harness (this take 99% of the effort on aligned all 3 holes: engine block, black bracket and fuel line bracket).


1. Started of with removing intake plenum


2. Then continue with removing the rest, and now we have the plenum off


3. As said before, use mirror. This will help a lot. Also study the orientation of the bolt (2 10mm bolts) the wiring harness black bracket and the fuel line bracket. (the black wiring harness bracket is positioned/sandwiched between the engine block and the fuel supply bracket).


4. Here is the back view of the engine block where the intake CPS is located.


Here is the detail of where is what. And to give more room to manuver my hand I disconnected one of the coolant hose (the one on the left of the 3 in this picture below)


5. With the amount of time involved, I would recommend to always use BMW genuine part. I'd hate to have to do this again just because I was trying to save a few buck. I also purchase new bolt as well. And as you can see it already has anti-seize applied on the thread.


6. I had the throttle body flange gasket (as you can see on some of the pic) off as well because I also loosen the fuel injector rail so I can lift it along with the wiring harness to give me more clearance to work with accessing the black bracket bolt.

7. After doing bank 2 intake CPS, doing bank 1 intake CPS is easier in comparison. There is still black metal bracket to support the wiring harness (just like bank 2). The bracket on this side is mounted directly on the engine so it is no sandwiched, and plenty of room to access the 2 10mm bolts securing it as well.

8. After both intake CPS intake replaced, I Was contemplating but finally decided to replace the exhaust CPS on bank 1 (since it still have the original sensor. The car has 85K now). As you can see this is the easiest as you just undo the hex bolt and take out the old sensor. The easiest by far.

This picture show how accessible exhaust CPS bank 1 from the top (I started to undo the hex bolt then took the picture).




Hope this additional information helps



Regardz,

J Irwan









02 Carbon Black ///M5

Last edited by J Irwan; 2nd October 2017 at 07:18 PM.
J Irwan is offline  
The Following User Says Thank You to J Irwan For This Useful Post:
chowdah (3rd October 2017)
Sponsored Links
Advertisement
 
post #2 of 6 Old 2nd October 2017, 06:29 PM
mech9t8
Addicted Member (>300 posts)
 
mech9t8's Avatar
 
Join Date: Apr 2014
Location: Canada
Posts: 362
Thanks: 8
Thanked 20 Times in 20 Posts
mech9t8 is online now  
post #3 of 6 Old 2nd October 2017, 06:57 PM
rycase
Junior Member, warming up (<31 posts)
 
Join Date: Sep 2017
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Perfect timing , I am replacing both of mine on the 00 I purchased a few weeks back. Thank you for the additional photos, looks straight forward.


I have considered lowering the k-member or removing the engine mounts so I could gain some clearance. Did you consider this at all?

88' Alpine White / Beige M3
00' Alpine White / Black|Gray M5
01' Alpine White/Beige M3 "Touring"
15' Alpine White/Black 328xd Touring
rycase is offline  
 
post #4 of 6 Old 3rd October 2017, 01:30 AM Thread Starter
J Irwan
m5board.comoholic (>1000 posts)
 
J Irwan's Avatar
 
Join Date: Jan 2005
Location: Mid-West
Posts: 1,439
Thanks: 145
Thanked 283 Times in 134 Posts
Another word of advice, be careful with the bank 1 wiring harness metal bracket.
Pay atention to 10mm bolt and avoid my headache with weird coolant leak


Regardz,

J Irwan

02 Carbon Black ///M5
J Irwan is offline  
post #5 of 6 Old 3rd October 2017, 04:17 AM
Knowledge1L
Member, Sport: Off DSC: On (>50 posts)
 
Knowledge1L's Avatar
 
Join Date: Oct 2008
Location: Maryland
Posts: 67
Thanks: 3
Thanked 2 Times in 2 Posts
Garage
Quote:
Originally Posted by mech9t8 View Post
Yup. Bank 1 piece of cake. Bank 2 PITA!
+1 I just replaced all 4 of mine. Runs great now though

2000 E39 M5 Titanium Silver Metallic
1991 E30 318is Alpine White
Knowledge1L is offline  
post #6 of 6 Old 3rd October 2017, 06:56 AM
chowdah
Super Moderator
 
Join Date: Jan 2007
Location: midatlantic
Posts: 4,819
Thanks: 3,736
Thanked 963 Times in 569 Posts
chowdah is offline  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW M5 Forum and M6 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY: Replace exhaust CPS (bank 1) sensor video FlyBMW E39 M5 and E52 Z8 Discussion 5 20th April 2016 06:49 AM
Whews...Finally replace CPS exhaust - Bank 2 (Cyl 5-8) J Irwan E39 M5 and E52 Z8 Discussion 48 1st January 2014 09:21 PM
Bank 1 CYL 1-4 Intake CPS sheefo2k E39 M5 and E52 Z8 Discussion 3 15th November 2013 06:22 AM
problem with intake cps bank 1 jamiestokem5 E39 M5 and E52 Z8 Discussion 21 24th April 2011 07:10 AM
Intake CPS (Cyl 5-8) replacement issue graffix000 E39 M5 and E52 Z8 Discussion 9 10th August 2010 07:57 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome