Python021

this is what my vag is tellin me:

4 Faults Found:
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16688 - Cylinder 4: Misfire Detected
P0304 - 35-00 - -
16955 - Brake Switch (F): Implausible Signal
P0571 - 35-10 - - - Intermittent

what my car is telling me:

as i accellerate usually to the floor, its bogging out round 3.5k then 4k then 5k

now sometimes in some gears this doesnt happen or if i hold back a bit but usually it does.

it just feels like the fuel injection has like a blip in the software, i dont really know.

maybe its the Secondary Air Injection System detection making my cyl4 misfire?

any ideas?

bl915

i dont think yours seems to be turbo related like mine.. it seems air injection related.. either bad pump, bad relay(s), or solenoid, which is causing those misfires. thats why your engine bogs and cuts. when the turbo cuts and cylinders misfire/cut it is a different feeling

bl915

i dont think yours seems to be turbo related like mine.. it seems air injection related.. either bad pump, bad relay(s), or solenoid, which is causing those misfires. thats why your engine bogs and cuts. when the turbo cuts it is a different feeling than when cylinders misfire/cut

MaxHedrm

1. Replace your brake switch (I recommend the VW part).
2. Ignore the secondary air pump, it only runs on cold start & would not cause misfires.
3. Swap the coil pack on Cyl 4 with a different cylinder & see if the misfire follows. If it does, replace that coil pack. If not replace your plugs.

That should get you started.

Python021

so i swapped plugs from cyl 1 and 4 (may be dumb but i dont know which side is 1 and which is 4) and still had misfire in four. then i swapped coils 1 and 4 this morning and i got misfire in cyl 1 which i thought was great, i ordered new coil, $32 advancedauto, put it on the far left cyl ( facing car) and my car ran great so i thought, got thru all the gears , heavy acceleration, no bogging out, then like 2 miles later, after some heavy play, it bogged out again, not nearly as often as it used to, but idk what else is wrong, im gonna check the vag in the morning to see what it says, no more check engine light though!!!

MaxHedrm

Glad I could help. How did the plugs look when you pulled them out?

Python021

Address 01: Engine Labels: 06A-906-032-AMU.lbl
Part No: 8N0 906 018 AT
Component: 1.8L R4/5VT G 0003
Coding: 06710
Shop #: WSC 01236

3 Faults Found:
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16685 - Cylinder 1: Misfire Detected
P0301 - 35-10 - - - Intermittent
Readiness: 0010 0000

-------------------------------------------------------------------------------------------------------------------------------------------------------
Address 17: Instruments Labels: 8Nx-920-xxx-17.lbl
Part No: 8N1 920 930 E
Component: KOMBI+WEGFAHRS. M73 D08
Coding: 07244
Shop #: WSC 00000

1 Fault Found:
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent

-------------------------------------------------------------------------------
Address 22: AWD Labels: 02D-900-554.lbl
Part No: 02D 900 554 B
Component: HALDEX LSC ECC 0006

1 Fault Found:
00526 - Brake Light Switch-F
27-00 - Implausible Signal

Python021

so i am still getting misses, i think i should do all the plugs as well, i've been reading bout ngk bkr 6e? any suggestions?

MaxHedrm

You still need to replace that brake switch ... that can actually interfere somewhat. (Unlikely though) The purple VW one is only a few bucks.

The intermittent random misfire could be plugs. When were they last replaced? What were they gapped to?

JohnLZ7W

Stick with the NGK PFR6Q