I'm coming to the forum looking for help diagnosing a problem that has a master Audi Tech and I stumped.
The Problem: Multiple Cylinder Random Misfire, Misfire on Cyl 2 and Cyl 3 codes. Runs fine on highway after first start in the am. Begins to misfire badly/throw code within 1 mile after exiting highway driving and starting "stop and go" city driving
The Car: 1999 VW Passat 1.8t "AEB" engine code
192,xxx miles. Greedspeed/Neuspeed ECU. All else is stock
****ICM module replaced less than 1000 miles ago due to misfire/similar problem. All was fine until now*****
Compression tested (cyl 1-4): 155lbs, 150lbs, 145lbs, 155lbs
Repairs/troubleshooting tried already:
Swapped cyl 2 and 3 coils for cyl 1 and 4. Result: problem remains / same error codes (cyl 2 and 3 misfire / random misfire)
Swapped cyl 2 and 3 injectors for cyl 1 and 4. Result: no change, problem remains
Any ideas / recommendations on where to go from here?