yariks

Hi everybody,

Yesterday, my '03 A6 3.0 started to shake while driving and check engine light came on. I scanned for codes and pulled P0303, which reads as misfire in cylinder 3. I suspect ignition coil, since I had the same symptoms around a month ago, but with P0304 - misfire in 4 cylinder. My question is - is it normal for that model year (2003) to have two ignition coils go out in one month or there can be another problem with ignition system?

paulroad

I've gone through 3 in 4 months. They are all 4 years old with 135K miles on them. This is why I carry a spare. At $22.00 per coil for OEM, (carson@riversideaudi.com) what have you got to loose?

yariks

Thanks. It' jut that car has 34k miles on it and it' really frustrating since I love Audi very much.

S4_Cinci (I S'edTFA)

costs as much as possible...there have been coil pak issues with VAG products in the past.

yariks

How can I replace the coil?
I've ordered a Bantley manual, but I cannot wait till it comes.

S4_Cinci (I S'edTFA)

that attaches to the coil; simply remove this and then the coil is attached to the valve cover with 1 or 2 bolts/screws/fastener of some sort - remove them and simply pull it up and out. May have to take some stuff off to get a clear shot at the coil, but should be pretty straighforward. When installing the new one, make sure you hear/feel it "click" onto the sparkplug; re-attach everything and you're good to go.

yariks

Hi again,

I've replaced the coil on cylinder 3 and took it for a test drive. The car was running fine for several minutes, but then RPM started to jump and car started shaking again. MIL light came on again. When I've stopped, I could smell something like burnt rubber. Interesting thing is that when put transmission into P or N, RPMs don't jump as much and car is shaking less. I am going to take it to indy tomorrow, but wonder if anybody had the same problem before and can tell what can I expect?

Thanks.