Mass Airflow Sensor
 

Well i decided to be slick this afternoon and try and clean my Mass Airflow Sensor without really knowing what I was doing. So I decided to take the 2 screws off and pull out the connection going in at the top of the airbox and in the process pulled off some of the connection plugs on it and now i cant figure out how to get in there to put them back on, I gotta go to work on monday so I need help bad. Should of just stuck with, if it aint broke don't fix it...

i looked into it a little deeper and it looks like i made a terrible mistake removing those screws lol. Im going to pry off the top and pull out the soldering gun and try and work some magic, let me know if im on the right track

https://www.yotatech.com/forums/show...ght=maf+screws
https://www.yotatech.com/forums/show...ght=maf+screws
https://www.yotatech.com/forums/show...ght=maf+screws

Just a few examples of others that have done that.

oops! :chair: damn toyota for putting those screws there to begin with :nono:

i got it all back together and my truck runs fine now thank god

Good work, did you rip them apart bad? I drove for years with mine soldered back together, with no problems.

i didnt rip them bad at all, they broke cleanly so it was easy to get it back together

Just for the record, the 3.0 and 22re use a AFM (air flow meter) not a MAF (mass air flow) meter. The MAF do need cleaning sometimes especially with oiled air filters. I don't think the AFMs ever need cleaning, or rarely anyway.

That's helpful to know! I was just going to test the AFM on my '92 (3.0) in the morning and wondered about cleaning it. I've never used an oiled filter in there, although I do have a K&N stock replacement in my '86 (22re). Out of curiousity, I looked in the '86 the other day, but it was spotless....with over 200k mi. on it.
Thing is, I wasn't sure there was a distinction between AFM and a MFA because I'd been reading up on diagnosing the AFM in the '92 and kept running into threads on MFA's. I kept wondering about these different terms...now I know. For the record, again, is VAM (in the FSM) the same term for AFM?

I really messed mine up.... (shoulda read on here first!!! wont make that mistake again!!!) this was just about 2 months ago, and I soldered them back on with no problems, knock on wood!

Probably, the MAF measures the air flow my estimating its mass (small heated wire cools with air flow) , the AFM measures the air flow by volume (spring loaded flap door opens wider with more air). The "V" must stand for volume.

I believe the V stands for "VANE"...

Ok you made me look it up:
http://personal.utulsa.edu/~nathan-b...92volumeai.pdf
It is Volume air flow (VAF) meter.

I stand corrected....

Unless, you're sitting....:nerd:
Thanks!

The mass airflow sensor equipment is rather delicate I came to find out today. I was taking the whole air intake unit out in order to work on the headlight assembly and decided to take loose those two little screws, thinking it would probably be similar to a computer to monitor cord.... just plug and play right? wrong! Those two little screws made my life very complicated today. I was able to fix with some solder though, but it was an almost extremely expensive mistake.

somebody should take a pic of those screws and sticky it saying "do not touch"

toyota's idea of a prank! lol

Kinda like an installer I knew who would use ground wire from the same color as the primary wire for an amp. Obviously since he used a DMM he could very quickly tell which wire was ground. But boy howdy did his installs come back when customers removed the amp for whatever reason, then put them back in! LOL

"My amp suddenly blew and I have no idea why!! I have warrenty yall screwed it up!!"

In reality customer fooked with the install. But think of it as toyota's engineers playing a prank! :)

So I took off the two screws not knowing what I'm doing going in blind to install k&n air filter on my 1993 pickup v6 messed with the soder and some parts of the board came with it. I ordered one off eBay for 75 used but my buddy has one from a 3.4 would it be compatible!?

You guy's are funny with trying to be professional sounding with all the acronyms, most real life mechanics just call them air meters, if you go to a shop and start with greeny lingo, there will be lots of laughs to be had by the people who know you can talk the talk but you still can't walk the walk.