Why is my car shaking?
1st Gear
Joined: Oct 2010
Posts: 14
From: Boston, MA
Your p300 code maybe related to a bad ICM. With that amount of miles on it, I'm willing to bet they are the original ones, and they are probably on their way out. When they go bad they will wreak all kinds of havoc on your firing sequence and overall performance.
You should find two ICM units either on top of your air filter box or very close to it. Swap them around and see if the issue goes to another cylinder. Of course, you will only know this if you have a VAG-COM.
Here is a link to how much they cost and what they look like:
Audi C5 A6 Quattro 2.7T > Search > Ignition Control > ES#10206 Ignition Control Module - Priced Each - 4A0905351A
You should find two ICM units either on top of your air filter box or very close to it. Swap them around and see if the issue goes to another cylinder. Of course, you will only know this if you have a VAG-COM.
Here is a link to how much they cost and what they look like:
Audi C5 A6 Quattro 2.7T > Search > Ignition Control > ES#10206 Ignition Control Module - Priced Each - 4A0905351A
i second that. I had random misfires like crazy back in 2011 and independent shops were saying one thing, the audi dealer was saying another. The quotes were from $1,500-2,000. Then i learned how temperamental the icms are and decided to investigate that. It turned out when i washed my engine bay i washed all the dielectric grease from in between the icms and the airbox. I cleaned the box and icm with electronic parts cleaner, added a clean glob of dielectric grease ($5 at most places) and started my car. Never had a problem since. Everyone was ready to replace all these parts on my car and the culprit was $5 worth of grease. Check it out bro before anything else. The grease is important because it absorbs all the heat from the icms and dissipates it into the airbox.
Your p300 code maybe related to a bad ICM. With that amount of miles on it, I'm willing to bet they are the original ones, and they are probably on their way out. When they go bad they will wreak all kinds of havoc on your firing sequence and overall performance.
You should find two ICM units either on top of your air filter box or very close to it. Swap them around and see if the issue goes to another cylinder. Of course, you will only know this if you have a VAG-COM.
Here is a link to how much they cost and what they look like:
Audi C5 A6 Quattro 2.7T > Search > Ignition Control > ES#10206 Ignition Control Module - Priced Each - 4A0905351A
You should find two ICM units either on top of your air filter box or very close to it. Swap them around and see if the issue goes to another cylinder. Of course, you will only know this if you have a VAG-COM.
Here is a link to how much they cost and what they look like:
Audi C5 A6 Quattro 2.7T > Search > Ignition Control > ES#10206 Ignition Control Module - Priced Each - 4A0905351A
Jason
1st Gear
Joined: Oct 2010
Posts: 14
From: Boston, MA
if an entire bank is misfiring, or non-grouped cylinders. so if banks 1-4 are all misfiring at the same time, or you have multiple misfires randomly from all the cylinders. i would read codes and different cylinders were misfiring randomly. As i said before i thought it was the ignition coils at first but before replacing them i ended up sourcing the problem to my icms and noticed they were missing the electrostatic grease.
Thread
Thread Starter
Forum
Replies
Last Post
