The Seed

Replaced all the plugs too. I ran the car, disconnected the coil pack from cylinder one and the tone and mood didn't change. I replaced this pack and all the plugs with NGK Copper 6's and nothing changed. Without a VAG what else can I look for? I was certain it was a coil pack.

I've had all the coils replaced back in the day when the recall came out.

01 TMQ 60k miles

JAFO

it would help to know what year and engine.

The Seed

01 A4 Turbo Quattro Manual with 60k and a bunch of mods, APR chip

audinutt

a bad or plugged injector.

-richard

The Seed

So I got a VAG and it tell me this:

17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16688 - Cylinder 4: Misfire Detected
P0304 - 35-00 - -
16687 - Cylinder 3: Misfire Detected
P0303 - 35-00 - -
16685 - Cylinder 1: Misfire Detected
P0301 - 35-00 - -
16686 - Cylinder 2: Misfire Detected
P0302 - 35-00 - -
17772 - Cylinder 4 Ignition Circuit: Open Circuit
P1364 - 35-10 - - - Intermittent
Readiness: 0000 0000

I reset the Codes and ran the car 'cause I don't know when these were thrown and I have this:

2 Faults Found:

16684 - Random/Multiple Cylinder Misfire Detected

P0300 - 35-00 - -

16688 - Cylinder 4: Misfire Detected

P0304 - 35-00 - -

I replaced the Ignition Coil in Cylinder 4 because I already knew it wasn't firing. I also swapped all the plugs. What else can I run now that I have a VAG to help me isolate it?

-Seed