Jake

And this is what came up:

P0420
Catalyst Efficienct
Below Threshhold
(Bank 1)

P1142
Manfacurer Contrl.
Fuel Air Metering

P1545
Manf Cntrl Veh.Spd
Idle Speed Control
Auxiliary Inputs


Any ideas? MAF and IACV went bad?
I have an 00 GTi VR6 with a Magnaflow catback.. thats it.

3drwhore

not to change the subject but how does that magnaflow exhaust sound?

BisquitMan

Maf possibly, also maybe 02 sensor.

drft_wannabe

i think my car was throwin that same first code and it ended up being the cat. and thats a free under warrant up until 80k/8 yr. so if your under that get it checked out at the dealer.

flybyuin2.2

The MAF seems to be a common problem, it's always good to have a spare, TB are also known to fail, I would clean the MAF first, than the TB and see if the problem goes away before replacing parts.

Jake

Yea, i planned on cleaning the TB up really good next weekend when i put in my clutch.. knock it all out in one day. I hope that fixes it..

zymol

If you "clean" the MAF it will be ruined. You can't clean MAF's after the A3 chassis went away. A4 and newer elements are made w/ different materials and will fall apart if cleaned w/ chemicals. I think VW did this to sell more parts.

zymol

If you observe value block 01-08-032 in 01-Engine w/ someones VAG-COM you can look at fuel trim and I can tell you if your MAF is the problem. Also 001, 010 and 33-OBD, Mode 2, All PID's.

zymol

I would not start throwing parts at your car as these parts are WAY TOO EXPENSIVE to guess with.