FIXED!!! Did a bunch of repairs and now CEL, DME errors P0021 and P0024 and misfires

[X5only]

Originally Posted by swissfrank

let us know, this sounds interesting. Did you by any chance touch the vanos, timing chain tensioner or sensor wheel? possibly causing the timing to jump?

Nope...however, I accidentally cracked the tip of the eccentric shaft sensor and replaced it. Some debris from VCG also fell into the engine but I believe I retrieved most of it if not all.

[06 X5]

Dang, what a pain! Is it worth looking into finding an Indy who can perform this procedure for you? I wonder what they would charge for something like that??? You could ask them to check for any other updates available.

[X5only]

Originally Posted by 06 X5

Dang, what a pain! Is it worth looking into finding an Indy who can perform this procedure for you? I wonder what they would charge for something like that??? You could ask them to check for any other updates available.

Not just yet.... I did reset all the adaptations but DIS does not have reset RAM backup for X5 model. There was some improvement but the codes still came back. I could see the RAM backup option with the 7 series N62 engine but not X5. In the bimmerforums someone mentioned that INPA tools32 can reset it. I'm playing with it at the moment without connecting it to the car- have to be careful not to brick the car's computer!!

If I don't resolve this issue by this coming Monday, the car's going to my trusted Indy. I'm kinda exhausted and the wify is already nagging when I'm gonna be done.....

[06 X5]

Yeah, I have heard that can cause you some real headaches. Well that's a step in the right direction I guess. Keep me posted please. If you're able to do it, I will order the same thing you did from bmcables.

Best of luck to you!

[X5only]

I managed to do DME Ram Backup via toolset32 (Select d_motor.grp which will bring up the correct .prg file for your DME - scroll down the list of jobs - double click "RAM_backup" ) but this did not resolve my issue. 06X5, it may work for you. Indeed the DME was reset to factory defaults and I could see the camshaft adaptations were reset to correct values of 71 for exhaust, 127 for intake for both banks. But as soon as the engine was started (about 10 secs), I watched the intake value for bank2 vanos revert to 69 and the engine hesitated. I tried multiple times to redo Ram_Backup to no avail. From the forum posts retiming needs to be done when all fails. It's probably some debris stuck in the inlet timing gear - part #4 here http://bmwfans.info/parts-catalog/E5...chain_cyl_5_8/

I don't have any more energy left to tackle this and so I'm deferring to my indy this time around.

Pic #1 shows toolset32 successful reset of RAM_Backup. Pic#3 shows the wrong camshaft values of my car (Vanos inlet of bank 2). Pic #2 shows the values set to factory defaults after DME reset. +/- 5 deviance is within spec according to DIS/GT1.

[06 X5]

That really stinks. I hope it isn't a real involved repair. I am sure it's something simple that we're overlooking.

On a separate note, does that software all come with the kit you purchased from bmcables? You can PM me if you want, just clean out your inbox so I can send you messages.

Thanks,
T.J.

[X5only]

Spoke with two BMW Indy's regarding this issue and both concur it's not easy for the timing to slip just like that unless I worked on the timing components such as the camshafts, cogwheels etc. Mere small plastic debris from changing valve covers would not unless something like a bolt drops into the engine jamming things in there. Both suspect either the vanos solenoids or valvetronic motor in bank2 (the problem side).

The struggle continues............

[X5only]

Does anyone know what the fix for this issue is? I have done DME Ram_Backup, cleared adapation values, did valvetronic relearn via GT1, changed the vanos solenoids and all 3 sensors on bank2 to but the codes persist and I get check engine light and car idles rough and misfires.

Before changing the valve cover gasket bank2 the engine was running perfectly and I didn't touch timing components of the engine while. I'm almost throwing in the red towel. Really frustrated by this issue.

[06 X5]

Are you still getting all the same codes that you have been getting the whole time (since the initial repairs)? Do you have access to a wiring diagram for the DME? I'd be curious to trace the wires and test for continuity from the VANOS, Eccentric shaft sensor, camshaft sensor... back to the DME. Make sure there's not a bad connection somewhere.

I can't think of anything else to suggest to you. I should be finishing up my repairs on Monday. The only thing I can't do yet is do the DME Ram_Backup because I haven't received my DIS software yet.

All I can say is that I hope that this round of repairs for me fixes the issue. I am exhausted and you've done way more work towards fixing your problem that I have. I feel for you brother!

Best of luck!

[X5only]

Originally Posted by 06 X5

Are you still getting all the same codes that you have been getting the whole time (since the initial repairs)? Do you have access to a wiring diagram for the DME? I'd be curious to trace the wires and test for continuity from the VANOS, Eccentric shaft sensor, camshaft sensor... back to the DME. Make sure there's not a bad connection somewhere.

I can't think of anything else to suggest to you. I should be finishing up my repairs on Monday. The only thing I can't do yet is do the DME Ram_Backup because I haven't received my DIS software yet.

All I can say is that I hope that this round of repairs for me fixes the issue. I am exhausted and you've done way more work towards fixing your problem that I have. I feel for you brother!

Best of luck!

Yes, the fault codes are exactly the same as before:
- 2A84: CDKENWS2: intake/inlet vanos 2: Limit stop adaptations out of valid range
- 2A89: CDKAMWS2: outlet/exhaust vanos 2: camshaft adjustment has not reached retard/late position

Last night when I installed new vanos solenoids, the adaptation values stayed correct for quite a while and in fact I started celebrating....and as if to spite me the values reverted to wrong ones and the idle started sputtering.

Please update the thread with your findings.

Thanks.