Go Back   The Navara Forum > D40 > D40 Maintenance and Tech Resources

Reply
 
Thread Tools Display Modes

MAFS Cleanup With Pics
  #1  
Old 03-12-2016, 11:00 PM
Old.Tony's Avatar
Old.Tony Old.Tony is offline
Administrator
 
Join Date: Oct 2009
Location: Mid Coast Region, NSW, Australia
Posts: 14,477
My Mood:
Garage
Default MAFS Cleanup With Pics

Time to do it again, so I took pictures. Let's clean our MAFS the right way!

Tools needed:

* 7mm socket wrench
* Can of MAFS cleaner or electrical solvent
* Clean cloth, microfibre is good

Steps involved:

1) Locate the MAFS. Here 'tis, in the back of the air pipe leaving the air filter box.



2. Undo the 2 bolts holding it in place with a 7mm socket.



3. Carefully withdraw the sensor taking care not to bash it on anything. You might need to move the fuse box to the side a little to extract it.



4. Inspect the MAFS opening - you'll see some components and wires inside. Do NOT EVER insert anything in this hole. In your hands is a $400 component.

Attached Thumbnails
Click image for larger version

Name:	20161204_071815-resized.jpg
Views:	294
Size:	109.1 KB
ID:	21972   Click image for larger version

Name:	20161204_071901-resized.jpg
Views:	295
Size:	78.2 KB
ID:	21973   Click image for larger version

Name:	20161204_072100-resized.jpg
Views:	290
Size:	66.3 KB
ID:	21974   Click image for larger version

Name:	20161204_072139-resized.jpg
Views:	287
Size:	61.5 KB
ID:	21975  
__________________

Check out the FAQs by clicking here!

Visit the Australian National Navara Muster website: www.navaramuster.com.au

"Unfortunately we live in a society where pizza gets to your house faster than the police can."
Reply With Quote
Sponsored Links

  #2  
Old 03-12-2016, 11:05 PM
Old.Tony's Avatar
Old.Tony Old.Tony is offline
Administrator
 
Join Date: Oct 2009
Location: Mid Coast Region, NSW, Australia
Posts: 14,477
My Mood:
Garage
Default

Step 5: Remove the electrical connector so that you can get it out where you can clean it. In this picture is the can of solvent I used (Jaycar, $11.50)



Step 6: Inspect the seal. At this point in the air intake, the engine should have filtered air with no contaminents - make sure your seal is intact and clean so that it doesn't allow foreign particles to enter here!



Step 7: Having cleaned it up (microfibre cloth) it's ready to go back in



Step 8: Reinsert the MAFS and reconnect its electrical connector



Job complete! Enjoy!
Attached Thumbnails
Click image for larger version

Name:	20161204_072212-resized.jpg
Views:	283
Size:	72.6 KB
ID:	21976   Click image for larger version

Name:	20161204_072358-resized.jpg
Views:	282
Size:	73.4 KB
ID:	21977   Click image for larger version

Name:	20161204_072559-resized.jpg
Views:	277
Size:	55.6 KB
ID:	21978   Click image for larger version

Name:	20161204_072629-resized.jpg
Views:	282
Size:	54.2 KB
ID:	21979  
__________________

Check out the FAQs by clicking here!

Visit the Australian National Navara Muster website: www.navaramuster.com.au

"Unfortunately we live in a society where pizza gets to your house faster than the police can."
Reply With Quote

  #3  
Old 04-12-2016, 01:12 AM
happy john's Avatar
happy john happy john is offline
Advanced Member
 
Join Date: Dec 2012
Location: Brisbane Northside
Posts: 4,384
My Mood:
Default

Good job as usual Tony, I'd like to add that there is an understanding in the bush that it's ok to use the following in an emergency. Vodka, Scotch and Metho, it's been proven that the Ethanol will destroy the resistors very quickly. I fired off an e/mail to a well known 4wd mag a few years ago after reading the editors comments suggesting it was fine to use. I keep a can of Liquid Moly Maf cleaner in the toolbox for $15 vrs $600 damage in the scrub. Just thought I'd share.
Cheers
__________________
Naving since 89
Reply With Quote

  #4  
Old 05-12-2016, 09:39 AM
gibboty gibboty is offline
Junior Member
 
Join Date: Aug 2016
Location: Singleton NSW
Posts: 18
Default

Good post Tony. I did mine the today and certainly made a difference, I just used electrical contact cleaner from Supercheap Auto cleaned it fine and micro cloth as Tony said. A heap of dirty fluid came out of it, but clean fluid after a few more good sprays, a shake and a wipe down. 237,000 on clock and doesn't look like it was ever done. I did spoke with a mate today who's a mechanic and he said I should spray every 5000K under normal conditions. He said I should not run a K and N filter or other oil based filters in my car as the oil from the filter will eventually get pulled through and then slightly coats the MAF sensor and then it collects dust and gets dirty rather quickly.
Just a thought.
Regards
Reply With Quote

  #5  
Old 05-12-2016, 10:09 AM
Old.Tony's Avatar
Old.Tony Old.Tony is offline
Administrator
 
Join Date: Oct 2009
Location: Mid Coast Region, NSW, Australia
Posts: 14,477
My Mood:
Garage
Default

The K&N filter - if overoiled (done properly it won't shed oil) - can cause problems but it's worse than you think.

The MAFS works by passing a certain amount of current through a specific sized wire, causing the wire to heat up at an expected rate which is measurable by monitoring the voltage on the other side. As air flows over the wire, it cools, and the amount of cooling obviously influences the voltage - thus you can work out how much air has flowed past the wire and can then assume that a similar passage of air has moved through the intake, giving you a very good idea how much air is heading in to the engine, allowing you to meter the fuel much more accurately.

When oil lands on the wire and the wire heats up, it burns the oil, leaving a film of hard carbon compound coating the wire. Eventually (and not too slowly either) this build-up changes the thermal characteristics of the wire thus altering the output, giving the ECU the wrong information about the quantity of air entering the engine.
__________________

Check out the FAQs by clicking here!

Visit the Australian National Navara Muster website: www.navaramuster.com.au

"Unfortunately we live in a society where pizza gets to your house faster than the police can."
Reply With Quote

MAFS Cleanup With Pics
  #6  
Old 05-12-2016, 11:17 AM
mike1303's Avatar
mike1303 mike1303 is offline
Advanced Member
 
Join Date: Sep 2011
Location: Canberra
Posts: 2,276
My Mood:
Garage
Default MAFS Cleanup With Pics

Times have changed
__________________

My fear is that if i was to pass on, my missus would sell my toys for the price i told her i paid
Reply With Quote

  #7  
Old 05-12-2016, 12:40 PM
DaveHAT's Avatar
DaveHAT DaveHAT is offline
Member
 
Join Date: Feb 2013
Location: Newcastle
Posts: 125
My Mood:
Default

15 ways to skin a cat ... I completely remove the airbox lid with MAF intact so I can clean it all on a bench.

Good write up Tony.
Reply With Quote

  #8  
Old 05-12-2016, 12:56 PM
bods's Avatar
bods bods is offline
Advanced Member
 
Join Date: Sep 2010
Location: Orelia, WA
Posts: 4,368
Default

Quote:
Originally Posted by happy john View Post
Good job as usual Tony, I'd like to add that there is an understanding in the bush that it's ok to use the following in an emergency. Vodka, Scotch and Metho, it's been proven that the Ethanol will destroy the resistors very quickly. I fired off an e/mail to a well known 4wd mag a few years ago after reading the editors comments suggesting it was fine to use. I keep a can of Liquid Moly Maf cleaner in the toolbox for $15 vrs $600 damage in the scrub. Just thought I'd share.
Cheers
And if all else fails and you are still stuck, you can drink the rest of the vodka and scotch hahaha
Reply With Quote

  #9  
Old 05-12-2016, 08:50 PM
happy john's Avatar
happy john happy john is offline
Advanced Member
 
Join Date: Dec 2012
Location: Brisbane Northside
Posts: 4,384
My Mood:
Default

Lol Bod's I like your thinking!
__________________
Naving since 89
Reply With Quote

  #10  
Old 08-12-2016, 03:52 AM
gibboty gibboty is offline
Junior Member
 
Join Date: Aug 2016
Location: Singleton NSW
Posts: 18
Default

Thanks for the info on over oiling the K and N filter Tony and the explanation on how the MAF works, because I had no idea.
Regards
Dave
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 05:36 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
| Home | Register | FAQ | Members List | Calendar | Today's Posts | Search | New Posts |