How Do You Adjust AFM?
#1
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
How Do You Adjust AFM?
How do i adjust my (afm) i think it is? or the (mass air flow Meter). right behind the airbox on my 88 glx there is a screw if turned counter clock wise what will it do to the mixture?
#2
Lives on the Forum
If it's on the AFM itself, DON'T MESS WITH IT - it's a calibration screw, and you'll most likely mess up how the car runs if you mess with it.
If you're talking about the R - L screw on the strut tower, that's an idle mixture screw that only adjusts air / fuel mixtures at idle.
-Ted
If you're talking about the R - L screw on the strut tower, that's an idle mixture screw that only adjusts air / fuel mixtures at idle.
-Ted
#5
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
I asked what it would do turned counter clock wise..Didnt really ask for you to tell me not to mess with it..I wanted to know What it does to the mixture.. If you have no idea Please Dont reply
Trending Topics
#8
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
can i get a response from someone that knows anything. or am i gona get the run around. OK so Dont mess with it! ok allready. Now Anyone Knows what the Mixture would change to if the afm screw is adjusted counterclock wise
#16
Lives on the Forum
Since you really want to **** with it, here's the nitty gritty details...
That screw controls a bypass passage around the flapper door.
The MAZDA FACTORY adjusts this once just to get the car running according to their specs.
All it does is increase or descrease a small amount of airflow around the main passage through the AFM.
It will **** your idle up.
It will NOT significantly affect AFM signal at higher RPM's.
The majority of airflow with go through the main passage through the flapper door, since it's opened significantly.
Remember, there is also a fuel pump cut-out switch integrated in the AFM.
If you open that screw too much, too much airflow will bypass the main passage and the door will start to close.
It can close enough to trip this switch, and the fuel pump will keep turning off.
I be the Mazda factory adjusts this switch low enough to be right above the fuel pump cut-out switch trigger threshold.
So, you're just ******* with your idle.
It doesn't affect air / fuel ratio significantly higher than idle.
This is why I recommend not to **** with it.
-Ted
That screw controls a bypass passage around the flapper door.
The MAZDA FACTORY adjusts this once just to get the car running according to their specs.
All it does is increase or descrease a small amount of airflow around the main passage through the AFM.
It will **** your idle up.
It will NOT significantly affect AFM signal at higher RPM's.
The majority of airflow with go through the main passage through the flapper door, since it's opened significantly.
Remember, there is also a fuel pump cut-out switch integrated in the AFM.
If you open that screw too much, too much airflow will bypass the main passage and the door will start to close.
It can close enough to trip this switch, and the fuel pump will keep turning off.
I be the Mazda factory adjusts this switch low enough to be right above the fuel pump cut-out switch trigger threshold.
So, you're just ******* with your idle.
It doesn't affect air / fuel ratio significantly higher than idle.
This is why I recommend not to **** with it.
-Ted
#19
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
so basicly there is no point to take your car into the shop for a tune up..cause you cant really "tune" it cause its allready calibrated? that makes no sence. calibration can over many many years Be off. i can change plugs wires, and all other things myself. So if these things cant be tuned then whats the point
#23
Lives on the Forum
Originally Posted by Adam
so basicly there is no point to take your car into the shop for a tune up..cause you cant really "tune" it cause its allready calibrated?
No, you do NOT take the car into a shop to get the *AIR FLOW METER* adjusted.
You take the car into the shop to get a *TUNE UP*.
Please figure out what the difference is before asking more bad questions.
If you need help on this, don't hesitate to ask.
that makes no sence. calibration can over many many years Be off.
The engine wears out.
Parts wear out.
Compression goes down.
Power goes down.
REBUILD THE ENGINE or GET A NEW ENGINE BEFORE ******* WITH THE AFM.
i can change plugs wires, and all other things myself. So if these things cant be tuned then whats the point
Ok, so you replace the spark plug wires when they are worn out.
How about you go to the Mazda dealer to get a brand new AFM for $1,000+ cause your AFM is worn out???
Does that make sense now???
-Ted
#24
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RETed
You're getting retarded on what you're trying to do.
No, you do NOT take the car into a shop to get the *AIR FLOW METER* adjusted.
You take the car into the shop to get a *TUNE UP*.
Please figure out what the difference is before asking more bad questions.
If you need help on this, don't hesitate to ask.
You're right.
The engine wears out.
Parts wear out.
Compression goes down.
Power goes down.
REBUILD THE ENGINE or GET A NEW ENGINE BEFORE ******* WITH THE AFM.
So explain to me what does changing spark plugs wires have to do with adjusting the AFM?
Ok, so you replace the spark plug wires when they are worn out.
How about you go to the Mazda dealer to get a brand new AFM for $1,000+ cause your AFM is worn out???
Does that make sense now???
-Ted
No, you do NOT take the car into a shop to get the *AIR FLOW METER* adjusted.
You take the car into the shop to get a *TUNE UP*.
Please figure out what the difference is before asking more bad questions.
If you need help on this, don't hesitate to ask.
You're right.
The engine wears out.
Parts wear out.
Compression goes down.
Power goes down.
REBUILD THE ENGINE or GET A NEW ENGINE BEFORE ******* WITH THE AFM.
So explain to me what does changing spark plugs wires have to do with adjusting the AFM?
Ok, so you replace the spark plug wires when they are worn out.
How about you go to the Mazda dealer to get a brand new AFM for $1,000+ cause your AFM is worn out???
Does that make sense now???
-Ted
#25
Rotary Enthusiast
Thread Starter
Join Date: Apr 2004
Location: King of the road
Posts: 908
Likes: 0
Received 0 Likes
on
0 Posts
Also im not talking about Replacing an AFM. Im talking about getting REcalibrated. SHEESH .thats if it even Needs it..agian i dont know.. WHat if they do need to be adjusted. and no one does it. btw 1,000 bucks RIPHOFF. first place i would be is the Junk yard. But i hardly think adjusting the screw is going to Destroy it.