I have been wanting to clean my MAF on my 96 runner, and finally got around to it the other day and all i can say is that everyone that hasnt done this really needs to, i have done that and changed my front o2 in the past two weeks and i have notived huge gas mileage changes.

 

How did you clean it????????

 

yes, do tell.....

 

Can I guess that you soaked the sensor in rubbing alcohol? Then, let it dry out properly before reinstall?

At least thats how the VW guys used to do it.

 

guys, it depends on what year you have. search "cleaning MAF". there are a bazillion threads w/ pics and i think there are 2 writeups in the tech section.

dang noobies!!!

 

but that takes effort.....

 

While you have the airbox and the intake hoses dismantled, you might as well clean the throttle body.

 

Hell, while I have the hood up I might as well swap a motor in, too

 

all i did was take the MAF off and then spray it with electrical cleaner, let it dry for a little bit and then reinstalled. pretty easy task

 

did the throtle body as well, for that i got some CRC intake and carb cleaner

 

hey yotarunner, what kinda mpg? before/after. i have cleaned mine and have yet to replace the o2 sensor! this may motivate me

 

I havent tried it on my toyota yet, but on my explorer cleaning the maf worked wonders. It smoothed out my rough idle and raised my MPG slightly. Usually rubbing alcohol or electrical parts cleaner (aerasol can) is recomended, and you let it dry completely before putting it back together. On the explorer its recomended that you reset the computer, and let the truck relearn its fuel timing curves. Is that recomended on the toyota?

 

Yes, but don't using rubbing alcohol - it has water and often times oil in it.


This is the writeup that most people find when they SEARCH:

http://www.4x4wire.com/toyota/mainte...tenancep5.html
(page down to "Cleaning the Mass Air Flow (MAF) sensor")

 

after 4 years i havent cleaned my MAF, when should i do it, that thread u just posted is after 30,000 or 2 years, i am way past that, should i clean it

 

YES!

Just about any of the typical spray cleaners will work... Remember that you're trying to break down the grease and grime that's built up on the sensor. I've even used brake cleaner.

 

maybe i will get more pwr

 

You should. At the least, the truck will run better - even if it's "fine" now.

Remember to reset the ECU after you do it so that the ECU will adapt to the new airflow readings quicker.

 

im going to clean the maf now .... i think it needs it 127k on the 4runner and its never been touched

 

EEEEEEEKKKKKKKKK!!!!!!!


fwiw, I did mine last night (a semi-regular cleaning) and even after about 8,000 miles of all on-road, there's a BIG difference this morning.

fwiw #2, I used brake cleaner. On the 3rd gens the metering passage in the MAF is sealed in the back. So (like I always do) I loaded up the "chamber" with brake cleaner, let it sit, swirled it every-so-often, then after about 10 minutes, shook it out, and ... done.

 

I wouldnt use brake cleaner, that stuff is harsh, and the maf is just a little electrical sensor.