Rough Idle... ... ... .. .. ...

Alright, so minor issues....hahaha.

As per last post, a rough idle has many symptoms, here is what I checked first;

-MAF
-coil packs
-spark plugs


Replacement costs
MAF aka air mass meter/air mass sensor - $170
Coil pack aka ignition coil - $40 each
Spark plugs (OEM - platinum) - $16 each
Spark plugs (iridium) - $14 each

Mass Air Flow Sensor
-To test the MAF, what I was told on Audizine was to have the engine run, and then disconnect the MAF while it is running. If the engine goes smooth, then you need to replace your MAF. I thought I could save some dollas and get an electric contact cleaner to clean the MAF.....ha! That shit pretty much kill the MAF. My idle is wayyyyy rougher now. Thankfully I have a new MAF on the way.

Coil packs
To check this, you have to disconnect each coil pack one by one while the engine is running. If you disconnect a coil pack and the engine does not do anything, which it should shutter or something, then that coil pack is toast. That is what I found on Audizine. All my coil packs seemed fine, but since one was soaked in oil, and I hate the rough idle, might as well replace them all to get the car in tip top mechanical shape. You will be looking for the latest revision (revision "E").

Spark Plugs
OEM spark plugs are meant to last from 60,000 miles to 100,000 miles or 100,000 km to 160,000 km. Remember to get spark plug anti-seaze and torque them to 22 ft/lbs (accordinf to http://www.audiworld.com/tech/eng36.shtml).

Since my car has 180,000 km, they looked worn as they where never replaced.

Link from google of bad spark plugs: http://www.aa1car.com/library/reading_spark_plugs.jpg

Don't know what spark plugs to get? Read this: http://www.audigeeks.com/forums/index.php?topic=56.0