Checking and cleaning MAF sensors

[DOG]

Hi there I too have a zd30 (2010 Mod) in a 2007 patrol (auto) the motor has only 30,000 Ks on it, But I cant keep fuel in it ? It runs great but at 5 Ks/Lt ,(14 mpg ) driven real quietly , It costs a lot to go any where , I took the MAF sensor out it seems to be new , Any clues what check next PLEASE ?

[threedogs]

spray the Maf you may not be able to see the fine film of oil residue on it.
You may be surprised the difference it will make.
Supercheap and JayCar sell Maf cleaner
Maybee look at fitting a provent catch can
PM mudski for pricing etc,

[Bacho86]

Hey all, I took my MAF sensor out for the first time yesterday, and it looked pretty clean?

Can someone please confirm what parts need cleaning? I saw a small hole, with what looked like a resistor inside (assume this is the sensor) - is that the only area that needs a spray?

Cheers

image.jpgimage.jpg

[4bye4]

Hey all, I took my MAF sensor out for the first time yesterday, and it looked pretty clean?

Can someone please confirm what parts need cleaning? I saw a small hole, with what looked like a resistor inside (assume this is the sensor) - is that the only area that needs a spray?

Cheers

image.jpgimage.jpg

Hey mate, I took mine out yesterday and cleaned it too. The resistor thing is the sensor wire. You may not be able to see oil on it but it made a difference to mine. I just held it (by the plug) over a piece of white kitchen paper and sprayed cleaner over the wires and the plate until the drips were clean. Wasn't much the first spray was a little yellow coloured. Waited till it dried then put it back.
Why do they put an air conditioning hose where you need to get a tool to undo the MAF sensor?
Tony

[Bacho86]

Thanks Tony, at least I was looking in the right area! Yeh i pulled off the air filter cover & pipe to improve access to the MAF

[the evil twin]

Hey all, I took my MAF sensor out for the first time yesterday, and it looked pretty clean?

Can someone please confirm what parts need cleaning? I saw a small hole, with what looked like a resistor inside (assume this is the sensor) - is that the only area that needs a spray?

Cheers

image.jpgimage.jpg

The MAF has two sense elements.
One for air flow and one for air temp.
Each is equally important really.

The guys have already mentioned how to best clean the device.
If you are running dry air cleaners such as factory you'll only need to do so every 10 to 20 thousand K's.
If you are running any type of oiled air cleaners such as K&N etc I would suggest every 5 to 10 thousand K's

If you fit a catch can then the intervals can be much further apart.
The reason being that most of the residue that finds it's way into the MAF sensor pack is from turbo surge pushing air backwards to the normal direction of flow.
Turbo surge is also the source of the "oil ring" you will see on the inlet plumbing side of the factory air filter.

That oil ring can be a good guide to how often you may need to give the MAF a clean.

[mullet_hunter]

another good read..

[mjr350]

What causes the oil ring on a N/A engine?

[BigRAWesty]

What causes the oil ring on a N/A engine?

The only thing that could cause that would be leaking intake valves
I would think.

[Brendynw]

Hi guys, I have rd28 in 98 gu man, last couple of days revs in neutral and when clutch in, have been going up and down on there own! And when it drops down to around 600 revs it will idle rough, when you lift revs it clears! Anybody got any answers! Cheers!