All Things Mk5 > How to Guides / Troubleshooting

Help with Maf Sensor

<< < (3/3)

hadley8899:
Just as a follow up to this, The job went a bit sideways

So after checking the pins to the MAF using the following guide

https://workshop-manuals.com/volkswagen/gti/l4-2.0l_turbo_(bpy)/powertrain_management/computers_and_control_systems/air_flow_meter/sensor/component_information/technical_service_bulletins/page_5084/

I got 5v ish on the yellow wire, Perfect ground on the brown wire but no battery voltage on the black wire

Note I neglected to mention that I also had the following codes

01314
p0100
p2188

I didnt think they were important at the time, Turns out they were a big hint. I tested the black wire on the MAF to fuse 29 (I think) in the interior fusebox and got no connection. Turns out I had a broken wire right down in the harness below the battery which ended up being really hard to find.
Fixed this wire all all is right in the world.

Apart from the fact I found the previous owner had shoved a bolt in the pipe from the PCV to the inlet, So I take it he knew the PCV was bad and did this bodge but thats a topic for another day

Cheers all for the help, Really appreciated

RBS:
Maybe a long shot but have you deleted the fault code in VCDS after installing the new MAF sensor?

hadley8899:
Yeah cleared all the fault codes, Can see a good reading for the maf now about 2 ish g/s at idle and goes up and down with revs.

Looks like the issue is all fixed, Atleast for now. Ive got a hunting idle so ive ordered a new PCV and pipe which is coming today that will sort that issue (I hope)

Greek_GolfV:
The does have stock ecu? Or custom map?

Navigation

[0] Message Index

[*] Previous page