Nightlifephantom

Update:

So yesterday I ended up changing the Cam Position Sensors for both banks. After some research, I found information that points that's the Camshaft Valve actuators cannot be removed unless the the engine/timing case is removed from the car. Can anyone confirm this?

After installing both new Cam Position Sensors, I cleared all DTC's via vagcom, started the car... it ran smooth for a few seconds then started rough idling again. I then scanned the car again via vagcom and this time I had codes for random misfire, Cylinder 1 and 3.


Anymore ideas?

Nightlifephantom

Update:

So I noticed my coolant was disappearing little by little. I topped of coolant with G13... level seems fine after a few days... weird.

As for the Actuators... all manufactures I spoke to said that it's built onto the timing tensioner and there no way to just replace just the actuator on the 4.2? Can someone verify that for me?

Also it appears that more cylinders are now misfiring.

So far updated symptoms are;

- Very rough idling at idle that's smooths away at driving but still I can see the rev needle jumping/twitching

- Car takes a while to warm up on the temp gauge

- When first starting car looks like there USB more smoke coming out of left exhaust pipe than the right exhaust pipe

- Less performance

- Very poor gas mileage

Nightlifephantom

After my last post, I ended up taking the car to Audi for diagnosis. After weeks of them having my car... I was told today that the timing is off. Audi wants to charge a whopping $4,997 to retime the car.

Anyone have a DIY on fixing the timing?

I'm located in upstate NY and would also consider having someone do the work for me for a lot less if possible.

Thanks guys.

Nightlifephantom

Ok, so after speaking to the service manager some more... I was told the timing was off by half a tooth. At this point I'm highly doubting the timing chain/timing is causing this issue.

raj99

I recall in my old C5 I had timing off my a full tooth and didn't get a CEL...the car sounded bad and didn't run great, but I think that's a red herring.

Craig Cringston

Were you able to confirm it was the timing causing your issue?

Nightlifephantom

Craig Cringston

Dude, I am hoping its the latter for you. I have been searching all over this forum for a more definitive answer to yours and and many others as mine is doing something very similar. That is weird they think it is the timing and yet have gotten back to you on the confirmation. Especially that you got more promising codes.

This is what I get:
P0056 - O2 Sensor Heater Contr. Circ.(Bank2 Sensor 2) -
DTC Status: Sporadic

P1672 - Fan 1 Control circuit Open circuit /short circuit to ground
DTC Status: (blank)

P1900 - Fan 2 control circuit Open circuit/Short to ground
DTC Status: (blank)

P0300 - Random/Multiple Cylinder Misfire Detected
DTC Status: (blank)

P0301 - Cyl. 1 Misfire Detected
DTC Status: (blank)


P0303 - Cyl. 3 Misfire Detected
DTC Status: (blank)
Since then I have replaced the following:
put in a new battery from pep boys
All spark plugs with Iridium NGK (the person before me had 4 different plugs installed)
All new coils packs
on one side (to test for Cylinder 7) i replaced the coil pack harness because all four would not hold their connections to the coils
Changed the oil and filter
put in fuel injector cleaner (although i have not ran it long enough for it to even do much.
It runs a little better but still has a rough idle. Never dulling out.

Nightlifephantom

Craig Cringston