P0011 Code 2001 X5 4.4 M62 V8 -New Owner-

[andrewwynn]

Sorry I may have confused two motors. Mine has intake and exhaust yours only has intake CPS. It has cam position sensor that will give the computer relative position of the exhaust ports.

It's possible the timing disc gets bent that will wreak havoc.

[lebowski9]

Alright so I only have two CPS? I did switch them and the P0011 still returned. Do you have anymore ideas?

[andrewwynn]

Need a new one. They can both be the same worn and interacting badly with the disk. Also especially if the right bank I'm still not sure if it was the right, it's possible to damage the timing disk through the oil fill port.

[lebowski9]

Ok---Not sure I follow about damaging timing disc through oil fill port?

I guess I will order replacements--Are there any acceptable after market brands.... Femi?

At 118K miles what are the odds this is a timing chain guide problem or are we still looking at VANOS seals?
Thanks

Also, is there a way to diagnose CPS with an ohm-meter or similar means? Don't want to throw parts at it...

[andrewwynn]

Unfortunately no test for badly working CPS other than it doesn't work well in a car. The only time Ive ever seen the cam too advanced error the fix was replace the CPS.

I bought my CPS from Amazon from a place that said It was OEM from Germany. The instructions came in German they looked identical to the BMW part without the logo and worked flawlessly for 35,000 miles. (And still going. Both our M54 have this same part, both replaced with same OEM Amazon part.

Our CPS lasted about 4000 hours. (Both). I would have no problem recommendation of preventive replacement at about 4000 hours or whenever they are a likely candidate for causing problems.

I was just reading up on how the vanos functions and it sounds like it's possible for a bad seal to cause it to wander.

Did you already swap vanos solinoids?

If the solinoid is set to maintain cam position but leaks then it may advance the cam. You mentioned one that spins. They might both do that but one takes a lot more effort because of tight seals.

The CPS could be the symptom not the cause. You definitely want to swap solinoids and see if the problem swaps banks.

You may have already tried that. I didn't remember.

Re: bent disk; is for example somebody used a boroscope to look at the chain guides, it's quite possible to bend the disc that the CPS detects. When that is bent it will cause misreading of the cam position just like when out CPS.

[lebowski9]

Originally Posted by andrewwynn

Unfortunately no test for badly working CPS other than it doesn't work well in a car. The only time Ive ever seen the cam too advanced error the fix was replace the CPS.

I bought my CPS from Amazon from a place that said It was OEM from Germany. The instructions came in German they looked identical to the BMW part without the logo and worked flawlessly for 35,000 miles. (And still going. Both our M54 have this same part, both replaced with same OEM Amazon part.

Our CPS lasted about 4000 hours. (Both). I would have no problem recommendation of preventive replacement at about 4000 hours or whenever they are a likely candidate for causing problems.

I was just reading up on how the vanos functions and it sounds like it's possible for a bad seal to cause it to wander.

Did you already swap vanos solinoids?

If the solinoid is set to maintain cam position but leaks then it may advance the cam. You mentioned one that spins. They might both do that but one takes a lot more effort because of tight seals.

The CPS could be the symptom not the cause. You definitely want to swap solinoids and see if the problem swaps banks.

You may have already tried that. I didn't remember.

Re: bent disk; is for example somebody used a boroscope to look at the chain guides, it's quite possible to bend the disc that the CPS detects. When that is bent it will cause misreading of the cam position just like when out CPS.

I doubt disc is bent, this truck was routinely maintenanced by reputable shops by the PO who bought it new.


I have replaced both VANOS solenoids with new as of today. I switched CPS left and right to see if code moves.

Again, engine runs beautifully and only noise it makes is a very soft clug clug clug clug when idling HOT.

oil Pan and filter was clear of debris.

This P0011 code has been persistent, coming back every 6 starts or so, but why?? Hasn't come on since both vanos replacement but it probably will.

[andrewwynn]

Have you watched real-time cam position? On the M62 I repaired with the code, one cam was clearly different than the other. It helped me determine which side was at fault.


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[stiubhartach]

Originally Posted by andrewwynn

Have you watched real-time cam position? On the M62 I repaired with the code, one cam was clearly different than the other. It helped me determine which side was at fault.


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One thing to note as a new owner, is that the ability to get real time engine info will make things vastly easier on diagnosis and repair.

There’s several software options, including the actual BMW dealer software. Often owners will use an old laptop dedicated to the software. My garage laptop is an old IBM t60 thinkpad.

[andrewwynn]

I don't like the laptop solution but it's inexpensive and If you already have a garage laptop that's the way to go.

PA soft, INPA search and you'll find.

I have the foxwell NT510. It's pokey but it does what I need and super helpful.


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[lebowski9]

Originally Posted by andrewwynn

I don't like the laptop solution but it's inexpensive and If you already have a garage laptop that's the way to go.

PA soft, INPA search and you'll find.

I have the foxwell NT510. It's pokey but it does what I need and super helpful.


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I have a $50 scan tool, will that display the actual cam posistions?

Also, what do I need to use the computer, Windows XP? How does it connect to the car?