To remove or not to remove

[BYprodriver]

Originally Posted by doli3415

OK I've eliminated the cam position sensors by swapping them, still getting a deviation of 25.0. It seems to run good until the engine warms up. Its looking more like the variocam solenoid, which if that's the case I'm going to pull the engine and take care of a few other upgrades. One last question; Could the AOS cause this issue? there is oil present in the J-tube when I removed it.

AOS won't affect the cam timing. When AOS goes bad it just allows more vacum to the crankcase which sucks more air & oil into the intake.

[jb92563]

I wonder if you actuate the variocam with the engine off, perhaps you could actually hear if its trying to activate.

Listen to the good side to compare.

If you hear nothing either the solenoid is dead, stuck or the wiring/connector are at fault.

The misfires will probably stop once its working again and the timing is right.

Here is a good discussion on Camshaft Deviation. http://www.renntech.org/forums/topic/32942-camshaft-timingdurametric-readingerrors/?p=175209&fromsearch=1#entry175209

Thread #12 at the link discusses variocam function and the deviation...interesting and enlightening reading.

It just so happens to be that with the vario cam ON, the deviation is supposed to be 25 degrees, so perhaps yours is stuck or jammed up some how.


a detailed explanation of the VarioCam here http://www.renntech.org/forums/topic/32274-variocam-vs-variocamplus-a-primer/?p=171252&fromsearch=1#entry171252

[doli3415]

Tried to activate bank 1 variocam with the car not running, I could not hear anything. Does that mean its stuck? Now when the car is running and I activate it the car almost stalls out.

I guess I know what needs to be done but I looking for direction. What direction am I headed????

[doli3415]

I'm going to replace the variocam this weekend. Hopefully this fixes the misfire issue. I'll post the results.

[doli3415]

replaced the variocam solenoid this week and it still doing the same thing.

I've attached a screen print of the codes. looking for help. Again