LZY13B build thread

[seangti]

Well took it into the shop and we have found the problems air flow meter isn't working properly so explains why I've lost so much power down low and the N249 is faulty so playing with the boost I wonder how long it's been like that for and how much power I've been missing out on even on stage 1 haha I get the feeling I'm gonna get a good kick when I get them replaced

Good news dude. Have you sourced a new MAF? Louis may have an old one laying around to off load.

[LZY13B]

this shows the two faults i got but i get the feeling the N249 is only showing a fault cos the vacuum line has come off the bov a few times but never had a problem with boost.

i know the maf is my real problem but im getting a little confused
do i buy a complete unit like this or do i just need the new sensor? cos the ones showing just the sensor are 4 times the price
Volkswagen Polo MK4 Facelift 9N3 1 8 GTI 2006 2009 Mass AIR Flow Sensor Meter | eBay

[louis19]

If you need a sensor, as Sean said, I've got my old one available. I replaced it thinking it was the sensor failing but turned out to be a problem with the wiring harness instead.

If you want a brand new one, I'd get a genuine Bosch one. Heard the aftermarket/cheapy ones having issues and not performing as they should.

[LZY13B]

thanks mate but thinking of just buying a new one just so i dont have to worry about it last thing i want is to put on a second hand one and have it play up again down the track

[louis19]

No problem I can appreciate that.

Heres the one I got, seemed to be the cheapest genuine I could find locally.

https://www.ebay.com.au/ulk/itm/181852174813

[LZY13B]

ok i think this work shop is ****ing with me i typed in the code 6Q0-820-045.blb for the fault as you can see from the bottom of the photo and according to the code that is just for the heater he told me that it was the air flow meter luckily i checked before ordering that part

[h100vw]

ok i think this work shop is ****ing with me i typed in the code 6Q0-820-045.blb for the fault as you can see from the bottom of the photo and according to the code that is just for the heater he told me that it was the air flow meter luckily i checked before ordering that part

6Q0-820-045.blb

This is a Part number mate.

The MAF begins with 06A. He doesn't know how to interpret the print out is my guess, not pulling your strings. Louis' Ebay link is correct for the part number.

[seangti]

ok i think this work shop is ****ing with me i typed in the code 6Q0-820-045.blb for the fault as you can see from the bottom of the photo and according to the code that is just for the heater he told me that it was the air flow meter luckily i checked before ordering that part

It actually says to the left of that code on the print out it's HVAC and recirc code below that. Nothing on the print out suggests MAF. A MAF issue doesn't surprise me, but what's pointing to the MAF?? What's not to say it also isn't a wiring issue like Louis had?

[LZY13B]

Hey guy that tuned my car and did the scan who showed me that fault said it was the maf but he has made a mistake that isn't the problem might just be something with the boost might just change some vacuum lines might have a small leak somewhere

[sambb]

If you can make it to chullora tonight (well before the GP starts) we can take some logs of your car.