Question about 1999 Audi A6

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STILL MISFIRING!!!!! 99 Audi A6 Avant

I changed the ignition coil pack, put in new plugs twice and wires, and still getting misfires. Changed the plugs twice becuase the first time I put in Bosch platinum and there were misfires, so I put in OEM NGK plugs (resistor). The car accelerates smoooth at first then begins to misfire after a short distance. At idle I have no misfires nor rough idling, no matter how long I let it idle. Exhaust odor is strong/heavy. Thinking of doing the cam position sensors next?

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  • dave517 May 20, 2009

    Strong odor upon morning starts. Accelerates fine. Misfires during regular travel (engine shutoff once or twice within the month whiles driving) 2001 A6 2.7L

  • dave517 May 20, 2009

    2001 Audi A6



    strong smell when starting in the morning

    Misfires

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AUDI A6 Recalls by Year

http://www.allworldauto.com/recalls/audi_a6_recalls_65-2089-1.html


Posted on Sep 22, 2009

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Hello before you replace parts you might not need try to test the map sensor see if it is within range this works with vacuum changes in motor goodluck please rate

Posted on Oct 03, 2008

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1 Answer

Audi 2001 a6 misfiring check engine light on


check all plugs and check to see if there oil in any of the cylinders if your valve covers have not been replaced there could be oil in there and ruin the plug first try changing all plugs i recommend ngk's plat or iridium if it returns you need find witch cyl or if its 3 or more couls be coil packs or icms located on top of the air box if you have 2.7T


owner of Audi A6 2.7T 2001.

Jul 10, 2014 | 2001 Audi A6

2 Answers

I have a 2003 audi a4 cabriolet 2.4 petrol and it is misfiring, coil pack has been changed twice now, spark plugs have also been changed, oil has been changed and it is still misfiring? It is on and off,...


when its mis-firing it is surley putting engine management light on so get codes read.
also when mis-firing need to check to make sure injectors pulsing usually done with magnistick light. if one not working could be injector or feed/earth from engine ecm. also remove and check continuity of coil packs incase another gone faulty.

May 01, 2011 | 2003 Audi A4 Cabriolet

1 Answer

2005 Cavalier misfiring on 2 cylinders, dumping fuel


Spark plugs get there voltage from the ignition coil packs, more then likely you have a bad coil pack or coil pack boot, pull one coil pack or spark plug wire or boot at a time, if you see a drop in rpm, that one is good, if no drop bad coil pack.

Jul 19, 2010 | Chevrolet Cavalier Cars & Trucks

3 Answers

1999 AUDI A6 avant 2.8L quattro. Car vibrates


This is a manual transmission? If so the clutch probably needs to be replaced. When you say "VIOLENTLY" what is going on, what is the road speed, what are the RPMs at? The more specific information the better. And this problem ONLY occurs between gear changes, right? The other times, everything is normal?

Nov 11, 2009 | 1999 Audi A6

2 Answers

My Audi A4 1997 1.8 Turbo is misfiring in the #2 cylinder. Changed the plugs and replaced the coil and still receiving the same code.


Check the wiring to the coil

Check to make sure the fuel injector is working properly.

Check compression on the cylinder

May 21, 2009 | 1997 Audi A4

1 Answer

Car runs rough when warm an accelerator is applied normal


P0306 is a misfire on cylinder number 6. The fact that you have oil on those plugs may or may not be causing it. The oil on the plugs is because of a leaking "internal" valve cover gasket. First thing I'd do is change the valve cover gaskets. Audi will murder you if you want them to do it (I've heard of people quoted $700 or more for this job). It's VERY easy to do. You can order the gaskets from www.ecstuning.com or www.purems.com for about $25 per side. I'd change them for sure, as they're a known issue on these cars.

Now, if your new plugs and changing the gaskets (and cleaning up of course) doesn't fix the misfire, you need to swap coil packs around and see where the code goes. The coil packs are the three parallel items on the top front center of the engine under the beauty cover. Trace the #6 wire back to see which coil pack it goes to. Then swap that pack with another pack, clear the codes, and fire up the car. See if the check engine light comes back and if so, scan the car to see what codes come up. If you still get P0306, then the failure didn't move, and the coil pack is not the issue (in your case, it's likely to be the wire, since you have new plugs and swapping coils didn't work). If the misfire moved to a different cylinder (one which is now hooked up to the coil pack that was originally firing the #6 cylinder) then that coil pack is bad and must be replaced (another known issue on the A4).

May 05, 2009 | Audi A4 Cars & Trucks

2 Answers

Need to change the spark plugs and cannot figure out how to remov


you just pull them off the plugs hope this helps regards Jim

Mar 29, 2009 | 2004 Audi A6

2 Answers

Daewoo lanos 2000 car is misfiring and wont run properly firing on cylinders 1 and 4 misfiring


have you changed the ignition wires? perhaps firing order crossed? if not coil pack or ignition wires faulty how do you know it is not "FIREING" on 1 & 4 have you tested it with a spark tester tool???

Dec 23, 2008 | 2000 Daewoo Lanos

1 Answer

Audi A6 Misfires


You may have a coil pack going bad. They're on the front top of the engine - you'll see them if you follow the spark plug wires back. Do you have any codes from having the engine scanned? If you can get it scanned (AutoZone will do it free), post the codes up and we'll see which cylinder(s) are misfiring. From there, you can swap coilpacks around and see whether the misfires follow the packs or stay in the original cylinders. If they move, you have a bad coil pack or two. If they don't, since you've already changed plugs and wires, I'd see about having the injectors diagnosed to see if any of them are failing.

Jul 18, 2008 | 1999 Audi A6

3 Answers

Misfiring cylinders 2 and 5


fuel injectors?, fuel pressure? low compression? even vacum leaks can cause misfires,

Jun 22, 2008 | 1998 Audi A4

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