Thread: No MAF

Poor fuel economy for one. Or at least not as good as it could be.

It's good to be there in working order, especially if it's Eu3 engine cos then it's more important.

Originally Posted by nismine01

Am I likely to have problems not having a MAF sensor in the system?

I have disconnected it to get over a surging problem (boost cut and back again) but wonder if there is likely to be a long term issue?

Regards

Mike

So have you bypassed the waste gate management solenoid?
That was recommended when I was looking for tips, and connecting the waste gate line direct to the intercooler pipe has sorted my trouble(as a temp fix).
Note that my issue is actually my brothers D2 TD5, so I'm not spending $s on it unless he OK's it.

I also disconnected the MAF to be sure, but doing that for me made no difference.
In saying that tho, he did replace his MAF with a cheapie Chinese copy off ebay just to get him by a few months back, but also ordered a genuine quality version to from the UK(not sure which supplier tho).
ATM he's running the cheap Chinese version and it's running fine.
So if you can't or don't want too, spend the $s on a genuine MAF .. maybe a solution is to try a Chinese knockoff just to keep you running properly. Can't remember exactly, but the cheap MAF was less than $50(something like $30-ish).
Has been running on the car since about April or so(he reckons) and Nanocom says it's fine. May be worth a try for 'ya.

I think VDO manufacture the proper MAF and they sell for about $200-ish by comparison. Like I said he ordered one too, and has it still in the box, but is only running the cheapie to test how durable it's going to end up.

@ sierraferry: how do you know if the TD5 is Euro3?(I know very little about D2s and TD5s .. (I'm more of a 300 TDi type). Brothers TD5 is a 2003 model.
It did have a cooled EGR contraption(deleted recently) rather than the straight pipe type... if that helps.

A 2003 Td5 is EU3.

There's always a 'but' in it though.
Nanocom does not give a fault of the MAF sensor, I would have expected one if my MAF was cactus.
Maybe I'm just expecting too much from Nanocom.
How do you get a trace of what is going on while driving with Nanocom hooked up please someone?

Cheers

Mike

Nanocom would give you air mass readings in instrument mode.
Sorry can't remember the numbers, but it starts off at something like XXg/hr at idle and steadily rises as revs and load builds up.

Sorry can't remember the numbers, but something like 50 at idle and into the many hundreds with a load and revs.
I checked it again a couple of weeks ago and don't remember stuff like that easily(ie. not my car).

I also remember brothers old one had various spikes, and many 0 readings. I don't think it should ever show a 0 reading when the engine is running(but don't know).
That's why he changed it initially back then too.

Also I remember seeing a YouTube video from Paddocks on using a multimeter to check voltages at the MAF too.
Never done it myself, and don't remember brother doing it either .. but looks like an easy way to confirm operation too.