Checking and cleaning MAF sensors

[Oversize]

ive tried cleaning it once..and i was dumb enough not to read instruction for cleaning it..after cleaning it..i waited for 20min(i didnt know i was supposed to waited until it was completely dry inside out..) and install it..and there it goes..maf sensor gone faulty..new maf sensor installed..,cost me hundred bucks..and its was like a virus..after it goes faulty..it effect everything..2 trouble code found..injection timing control,maf, light up..and now its top overhaul..blown head gasket..not sure if the head cracked or not..

Am thinking you had more than a MAF problem. I may be wrong. I often clean my MAF sensor as I work on dirt roads a lot. Can generally feel the lack of power in acceleration between 2nd and third gear as my key to a clean. Always do it when its hot so it dries quickly. Sorry to hear about your problems...

[Hodge]

Are the MAF's meant to have some sort of a rubber seal around the gap where the screws go? Just seems to me that it isn't a perfect air tight fit.

[threedogs]

From memory I thought they had an "O" ring to seal it
http://www.ebay.com.au/itm/Nissan-Pa...item19e00fa087

[energymann]

Thanks for the post

[mudski]

From memory I thought they had an "O" ring to seal it
http://www.ebay.com.au/itm/Nissan-Patrol-ZD30DDTI-GU-3-0-00-04-Air-Flow-Meter-AFM-MAF-ZD30DI-Pulsar-Maxima-/111133302919?pt=AU_Car_Parts_Accessories&hash=item 19e00fa087

Thats for the earlier ZD30's John. The later Di's and a CRD's use a different maf and there is no seal on them. I advise to apply a small smear of grease around the maf where it sits in the housing. Just to help it seal better. This applies to both ZD30 MAF's....

[Avo]

Forgive my ignorance,now I have read all these things about what to do and the benefits of doing so.But when I bought a can of cleaner from my local car store the bloke was telling me it can do more harm than good.the way he explained it was I could damage the fine wire inside..Now I am quite prepared to do this just thought I would mention it..Is it going to stuff it,will I do more damage than good.Out of all the shops in town.2 mechanics and 2 car yards plus 1 local car parts place I only found one shop with this Mass airflow cleaner..

[Hodge]

The only way I can see the cleaner stuff the MAF is if you reinstall it while it is still wet and not fully dry.

[Dave_H]

When spraying it i would just be a little more cautious around the wires and move the can back a little further when spraying near them. This is what i do and have not had any problems.

[P4trol]

Ok, a little uncertainty on the forums about a cleaning...

Maf sensor cleaner has three actions while it cleans. One is to dissolve any muck on the sensor/wire - oil, dirt, smoke (maybe smoke) etc. Two is to blast the muck off. Three us to dry without any chemical residue.

Obviously it is volatile (evaporates quickly). I guarantee it will affect your engine less than cleaning out your Intercooler with petrol (and failing to remove the petrol fumes).

If you can't see it wet, it is ok to reinstall.

Which brings to the second worry, the force of the spray bending/damaging the wire. The force of the spray won't do that.

Last step, have a beer.

[mudski]

Ok, a little uncertainty on the forums about a cleaning...

bla bla bla

Last step, have a beer.

Last step is best. Lol....
I fail to see the issue with cleaning it. Remove the maf, spray the shite out of it, let it dry, takes about half a stubbie or two mouthfuls, put the maf back in, go enjoy more beer.

People worry too much about it....