MK4 2.0 black smoke. Airflow meter?

[Colvs]

Hey guys, just wondering if anyone can help or has experienced something similar.

About 6 months ago, my Golf started to idle roughly, blowing black smoke and emitting a strong exhaust type smell from under the hood which would also enter the cabin. It was using 3L/H at idle too. I took it to the dealers and they replaced the Airflow meter. This fixed the problem and the car ran better than it has in ages. Until 2 weeks ago, when it started to show exactly the same symptoms again. Just wondering if it's possible the new airflow meter could already have died or if it may be something else like the O2 sensors? Is there any way I can test the airflow meter without the use of VAGCOM?

[RolfGolf]

Check the obvious things like hoses, connections etc, then save yourself a whole lot of hassle and get it scanned ...

Best Wishes.

[PeDiES]

coolant temp sensor is your most lickely cause

[Colvs]

Cheers guys. Is the coolant temp sensor something I could replace myself? Any idea how much one would cost?

[sirmoe]

Cheers guys. Is the coolant temp sensor something I could replace myself? Any idea how much one would cost?

Sensor costs $78 from VW Burwin from memory, not hard to replace either. I took it to my mechanic, it took him about 4minutes to change. That included time finding it.

[Colvs]

Sensor costs $78 from VW Burwin from memory, not hard to replace either. I took it to my mechanic, it took him about 4minutes to change. That included time finding it.

Thanks heaps!

[01mKIV]

yeah, my GTi had the same problem, i asked vw and they helped me **** all and my car still does it, so thanks for the help

[zakkus]

is it drinking the fuel like no tomorrow?

if so i iad the same prob on my 2.0 .....ended up being an o2 sensor. might wanna get a diagnostic check on it and it willl show if it isnt functioning properly

[Colvs]

is it drinking the fuel like no tomorrow?

Yeah, it's using WAY more fuel than normal. I'm gonna have to take it back to the stealers to have them check it. Hopefully it is the airflow meter again because it will have 2 years warranty on it and should not cost me again.

Thanks for the help guys!

[PeDiES]

Yeah, it's using WAY more fuel than normal. I'm gonna have to take it back to the stealers to have them check it. Hopefully it is the airflow meter again because it will have 2 years warranty on it and should not cost me again.

Thanks for the help guys!

two years warranty on their work not on electrical parts, unless theirs some kind of special situation. If you have done a airflow meter already i highly doubt you will need one again. If your skeptical then get it scanned.