Question about 2001 Audi A6

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01 Audi A6 p0351 p0352 and p0353

I have an 01 Audi A6 that was running horrible missfire ect. Pulled the codes and it gave me a p0353 and multible cylinder missfire codes all leading back to coil pack c. Replaced all 3 coil packs with new one and the car is running great but the CEL came back on and is giving me p0351 p0352 and p0353 codes but the car runs fine any IDEAS?

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1 Answer

Look at fuel trim on a professional scanner

You still have the same codes for the same cylinder
misfires,IF the codes are correct

The misfires could come from valve issues,the valves themselves
or the variable cam actuators if that applies,or from fuel issues,but
not as likely on all three cyl on same bank

You need to do a cylinder leak down test on all cylinders--to eliminate mechanical issues

Then a cylinder contribution test electrically with scope software

Then scope the timing events,the cam advance events,the crank
position, all layered on the same screen & see if they line
up where they belong.

If the cams are not the issue, then your left with a serious vacuum
leak in the intake on one bank.

What I'm saying, is you have one bank with misfires apparently
not now from the ignition since the coils were replaced

Posted on Mar 19, 2014

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Posted on Jan 02, 2017

Mustgo
  • 2359 Answers

SOURCE: my 2005 audi a4 is running lumpy

Don't laugh,have you try the Champion #344 copper plug


I'm assuming you has a 1.8 liter Turbo A4


Back in my racing day,I use high energy Jacobs Electronic to boost the spark. They call for copper plugs!!!


Go to a good auto part store and look up a set of Champion plug for your engine.


Good luck

Posted on Jul 15, 2009

  • 144 Answers

SOURCE: 2004 Audi A4 misfire

it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps

Posted on Sep 03, 2009

  • 1 Answer

SOURCE: 1988 audi 80 4cyl. no spark from coil,new coil fitted,coil lead

hi i have a coupe 1994 have same prob told by audi to replace the distributor as was common failt on audi's i have replaced new leads ,coil ,dissy cap, and arm ,still the same awaiting on distributor to see if this works hope this helps

Posted on Oct 18, 2009

agent91
  • 2100 Answers

SOURCE: i have a audi a4

It's the plug wires, I would peek at the engine at night when it is dark,and running to see if you can see a spark jumping across there. I'm surprised the code didn't say plug wires. Hope this helps.

Posted on Sep 05, 2010

vetteman3002
  • 2299 Answers

SOURCE: My car is Audi A4

I bet that you have removed the battery recently. Or had a dead battery. The coil problem is a major problem on the Audi A4. They have been and still are. One thing that you are suppose to do, that is usually not done when replacing the coil packs is replacing the connectors also. If and when the battery was removed then you have to do a throttle adaptation. I would think that the shop would have done this. If not this will continue to cause problems.

Posted on Oct 21, 2010

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Rate this please.

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