Cleaning Maf

[AmanParhar]

Hi Guys,

How do I clean my MAF sensor?

 

[kewe]

Dont know if this may be of help:-

http://www.vaglinks.com/Docs/VW/MKIV/RoadSleeper.com_VW_MKIV_Mass_Air_Flow_Cleaning_DIY.pdf

 

[AmanParhar]

Yea cheers for that... but isn't it easier to take out just the actuall sensor not the housing aswell (which has been done in the guide).... the only problem is it seems to be held in by screws with a strange head... they aren't torx philips or flat head; any ideas?

 

[sssstew]

yep just pop the sensor out, using security torx bits.

 

[DJ-LIAMC]

how the hell do you get hold of 91% Isopropyl Alcohol????

 

[Swig]

Maplin's sell Servisol IPA which is aimed at cleaning electronics.

Doesn't say how pure it is though.

http://www.maplin.co.uk/Module.aspx?moduleno=28994#features

See Q&A section - they think it is ok for a BMW MAF

 

[DJ-LIAMC]

oh thanks theres a maplin near me il pop in n get some, as my car feels a bit sluggish, could be many things but gonna clean the maf first.

 

[wakko]

Could be the warm weather fella. The intercoolers don't work as well in this heat and does affect the power. Or you could buy an FMIC!

 

[Muttley]

Boots the Chemists will sell you basic chemicals like IPA and Hydrogen Peroxide.

 

[sssstew]

Maplin's sell Servisol IPA which is aimed at cleaning electronics.

Doesn't say how pure it is though.

http://www.maplin.co.uk/Module.aspx?moduleno=28994#features

See Q&A section - they think it is ok for a BMW MAF

yep maplins stuff is fine, ive used it in the past.

 

[wakko]

I bought my Isopropyl Alcohol from the local chemist. I just had to wait a day while they got it in.

 

[DJ-LIAMC]

Ok, i got round to cleaning the maf today after i got some rubbing alchohol, dissasembled easy cleaned it (although it looked clean) on the sensor i noticed that the 2 metal prongs sticking out didnt have anything between them, or is it supposed to be like that??

Also i noticed like a splash of oil in my TIP looks like it came from N75 valve Is this normal or is something wrong?

Thanks

 

[DJ-LIAMC]

just cleaned my AIT sensor it was thifthy! oil all over it, so i looked at the TB also dirty, so i gave it a wipe clean. Not sure if its supposed to gather oil but i guess after 60k its inevitable. The only reason why im cleaning these things is because of poor mpg even when driving like a gran. Could anyone shed some light on my above post thanks

 

[drue1]

so you cant clean it with carb cleaner cos i clean most of my bits on the car with that

 

[DJ-LIAMC]

so you cant clean it with carb cleaner cos i clean most of my bits on the car with that

Not sure about carb cleaner but rubbing alchohol is highly recommended.

 

[Mr Bigglesworth]

i picked up some IPA 99.4% off ebay, came to around £7 for 1l and delivered in a few days.

 

[drue1]

http://cgi.ebay.co.uk/Servisol-701-...6:4|39:1|72:1683|240:1318|301:0|293:1|294:200

this should do the trick

 

[Mr Bigglesworth]

Yea cheers for that... but isn't it easier to take out just the actuall sensor not the housing aswell (which has been done in the guide).... the only problem is it seems to be held in by screws with a strange head... they aren't torx philips or flat head; any ideas?

It is so much easier to just buy the correct screwdrive bit and take it out that way - screwfix sell a security bit set for around £3.50. I did mine at the weekend, very quick and easy job!

 

[Swig]

So if I've got a security torx set (which I have) I can just take the sensor out without taking any pipes off or anything?

 

[Mr Bigglesworth]

So if I've got a security torx set (which I have) I can just take the sensor out without taking any pipes off or anything?

Yep - unplug it, undo the two security screws, pull it out, clean. (that bit took about 5 mins).

Then leave it to dry off properly. I was using fair concentrated Iso propyl alcohol so it evaporated off pretty quick. And takes couple of mins to reassemble.

And I'm no dab hand at this - real novice just following guides.