Question--------------------------------------------------------------------------------
I've been having an idle problem with my 2001 Audi A6 2.8 Quattro. It idles a little rough, but on the road when operating at higher RPMs it seems to run just fine, in fact very smooth. There isn't an Audi mechanic anywhere near me, but I was able to pull the following codes..
P0345 Cam Position Sensor
P0300 Random/Multiple Cylinder misfire detected
P0304 Misfire detected Cylinder 4
P0305 Misfire detected Cylinder 5
P0306 Misfire detected Cylinder 6
Also, the MAF, throttle body, and vacuum lines are all clean and functional. I also took the coil pack off and there was a small cut in one of the wires, but nothing too severe. I hope someone can guide me in the right direction here..
..Also I was told by an audi mechanic over the phone that running conventional oil may cause a sludge build-up on the tensioner, which is why it doesn't idle normal and acts fine at higher RPMs. It was suggested that I change the oil to full synthetic.
I changed to full synthetic about 50 miles ago and replaced the plugs with NGK platinums it seems to idle slightly better, but the CEL is still on and the rough idle is still somewhat present. I posted this before, but the Thread seemed to die, so I decided to repost.. I know someone has had this problem, thank you in advance.
AnswerHi,
Well the codes say random misfire, so I would suspect the coil pack first. Common failure item. The cam position sensor is a fairly easy replacement, however before replacing that, I would check the wires to it since they sometimes get severed when people work on the O2 sensors. Let me know what you find, Jan
