Intermittent misfire, leak and implausible MAP correlation

Swapping out the oil filler cap and MAP sensor didn't make a difference, but as the pressure errors didn't come back I figured the misfire problem might actually be unrelated. Switched the cyl. 3 ignition coil with cyl. 1's, and the misfire moved accordingly. A new coil later and she seems to run perfectly fine. Got so blinded by the first problem that I didn't consider if there could be a second one. :)
 
BearMcPear said:
Hello everyone. After cleaning up the throttle body and the flange its connected to as well as recalibrated the throttle body, my A2 has been behaving quite weirdly. Sometimes it runs perfectly fine until it misfires when pulling away or at idle and then continues to run poorly. Sometimes it misfires terribly when I start it, but runs perfectly fine after a restart. Another symptom is the engine shuddering every ~5 seconds when the oil cap is opened.
A scan showed the following errors:

16685 - Cylinder 1
P0301 - 35-10 - Misfire Detected - Intermittent
16685 - Cylinder 1
P0301 - 35-10 - Misfire Detected - Intermittent
17961 - Barometric / Manifold Pressure Signals
P1553 - 35-10 - Implausible Correlation - Intermittent
17912 - Intake Air System
P1504 - 35-10 - Leak Detected - Intermittent

I thought that perhaps I had made a mistake with putting things back together, so went through it again yesterday. The car feels the same, but after a scan only the cylinder 1 misfire error remains. Could be that it simply hasn't diagnosed the other errors yet.
The symptoms are akin to this thread, however no solution was found there sadly. Does anyone know what the issue could be or how I could diagnose it?
Click to expand...
Did you find solution to the engine running issue?
 
You must log in or register to reply here.
Back
Top