Thread: D2a Mass Air Flow

Very wise.
Taking pot luck by replacing parts on a whim can be a very expensive affair.
Do you have other symptoms other than a fault code.
I'm sure there are Aulroians near you who would be willing to lend their MAF if it would help identify something real.
I'm using an iPhone, so can't see you're location.

When accelerating of the mark, it hesitates quite a bit before going to full power. It drives really well apart from that and Idles nicely albeit with a little rev fluctuation. Its also a little hesitant when giving it a blast while its moving, say, overtaking etc. Im in Port Macquarie, In NSW.

I replaced the MAF sensor a couple of days ago with a second hand sensor that the seller confidently told me worked fine. When hooked up to the car the same error code pops up (P0102) and the car still hesitates at intersections. My question is; If the MAF is working fine, what other problems will display the same symptoms? And is there any way of testing if the MAF is working... say, with a multi meter or something?
Friggin MAF.

You can try removing the MAF, see if it acts differently.
I have a TD5, but I think the principal remains valid. Leaving it out permanently is NOT an option however! You'll use even more fuel than you do now.

I'm also not sure that just changing the MAF will remove the error code. You'll need to actually clear the faults. I don't know the bit of gear you need, but a nanacom does it for the Td5.

Curious too about what you paid for the 2nd hand MAF. I replaced mine for about $250. The car has never run better since I did it. It isn't a really expensive part when you consider they're good for at least 150k.

A message to Blknight might get you more answers, he's a bit of a guru and a very helpful bloke as well.

Gday Wardy1,
The secondhand MAF cast me $55 delivered to me. $250 is exactly the reason I didnt want to replace it with a new one! (Although I havent missed the notion that this will end up costing me $300 if I do need a new one!)
Is the MAF for a TD5 the same as the petrol one? I will definately contact BLKnight, thanks for the tip.

not sure about whether or not they're different mate sorry. I'm sure someone else will be able to help there.
The problem with the MAF is that there is no real way to test if one is working or not without getting the numbers from a nanacom or similar device. All I can say is that my Td5 was a totally different engine with a newie.
Good luck

Maf is able to be tested to a degree with a multimeter. There is instructions on how here. Use the search function at the bottom of the page for more info. The V8 MAF is different to the TD5. Disconnecting the MAF will cause the ECU to use default settings, useful to help diagnose a faulty 1 sometimes. http://www.aulro.com/afvb/1638565-post6.html

Cheers Scott

Originally Posted by wardy1

not sure about whether or not they're different mate sorry. I'm sure someone else will be able to help there.
The problem with the MAF is that there is no real way to test if one is working or not without getting the numbers from a nanacom or similar device. All I can say is that my Td5 was a totally different engine with a newie.
Good luck

Yes, they seem pretty critical to the engines performance. Do you know whether the intake air temp sensor is located in the MAF housing? I notice that there are two resistors or suchlike located in the housing. Maybe theyre both to do with air flow...?

Am i right in saying that a MAF sensor is just a resistor or varistor or some other such replaceable electronic component? If so, can I just solder in a new one and Bob's ya uncle?!