MAF removel question
#4
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
The EFI system is technically a MAF system, so the term used is correct in generic terms, just as if a Turbo II owner asked how to remove the supercharger.
#6
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Ah, but we're not talking about a "system", only the airflow meter. In common industry terminology, MAF (mass airflow) sensor refers to a hot-wire type airflow meter, not a moving-vane type like FC's have. Moving vane AFM's are not MAF sensors because they don't directly measure mass airflow. They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
#7
Go Team Womble *)
Join Date: Nov 2006
Location: Australia
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
Yes you can, but you need the now discontinued HKS VPC (or similar unit) to remove it. If you can find a VPC it will set you back around $300 US dollars. Not to far off a megasquirt are ya?
Trending Topics
#9
Rotary Freak
Join Date: Dec 2006
Location: New Hampshire
Posts: 1,791
Likes: 0
Received 0 Likes
on
0 Posts
They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
Yes you can, but you need the now discontinued HKS VPC (or similar unit) to remove it
#10
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
I've NEVER had to use a computer to remove a afm. So the correct answer is that, yes, you can remove the afm without a computer. Just use you fingers to remove the plug and a socket to remove the bolts. .......Not humor.
It's the question that was the joke.
Any other tough questions?
It's the question that was the joke.
Any other tough questions?
#11
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,832
Received 2,603 Likes
on
1,847 Posts
#12
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
I really hate Wikipedia, but it actually does have a somwhat correct definition in this case:
http://en.wikipedia.org/wiki/Mass_airflow_sensor
Feel free to look it up in your favorite engineering book. You may learn something.
Ah, but we're not talking about a "system", only the airflow meter. In common industry terminology, MAF (mass airflow) sensor refers to a hot-wire type airflow meter, not a moving-vane type like FC's have. Moving vane AFM's are not MAF sensors because they don't directly measure mass airflow. They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
#13
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
****theres that old one with the woodchuck...***************************
************************************************** **************
How Much Wood
would a woodchuck chuck
if a woodchuck
could chuck wood?
As much wood
s a woodchuck would
if a woodchuck
could chuck wood
I believe I answered that one if the first months of last year. Do a Search for WOODCHUCK. .........humor........I'll stop now. No more. Done. Fini. Bon Bini
************************************************** **************
How Much Wood
would a woodchuck chuck
if a woodchuck
could chuck wood?
As much wood
s a woodchuck would
if a woodchuck
could chuck wood
I believe I answered that one if the first months of last year. Do a Search for WOODCHUCK. .........humor........I'll stop now. No more. Done. Fini. Bon Bini
#14
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Funny then how the term "MAF" wasn't used until the hot-wire AFM came along. Who really cares if you can make an argument that it's a "type of MAF senseor", that's not what they've ever actually been called.
Last edited by NZConvertible; 10-26-07 at 08:23 PM.
#15
I really Schruted it
Join Date: Sep 2006
Location: Grand Rapids, MI
Posts: 573
Likes: 0
Received 0 Likes
on
0 Posts
Ironically, the word "terminology" is the wrong word in the sentence. "Terminology" is the study of terms. You would be stating that he would be ignoring the incorrect study of terms. The correct word is simply, "term".
#16
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Actually, a couple of dictionary definitions of terminology are "the body of terms used with a particular technical application in a subject of study, theory, profession, etc." and "the system of terms belonging or peculiar to a science, art, or specialized subject; nomenclature". Your meaning is also correct but rarely used.
#17
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
My point with this, as well as my original point with the MAF term, is that some things are not necessarily incorrect just because they seem foreign to one's lexicon.
#18
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Since this is an automotive website, discussing automotive topics including this one about an automotive component, what the automotive industry calls it is the most applicable term. I doubt the internet crowd has anything to do with it. I knew about automotive MAF sensors long before internet discussion groups were common. Probably from those old-fashioned book thingees...
#19
Rotary Freak
Join Date: Dec 2006
Location: New Hampshire
Posts: 1,791
Likes: 0
Received 0 Likes
on
0 Posts
NZ, yes I did misread your post, sorry. I seem to be doing that a lot lately.
Evil, why argue over this? The sensors measure exactly what they are called. Air Flow meter, measures airflow velocity where as Mass Air Flow sensors will measure the mass density or air. Im sure you could call the "thing" known as a AFM, a potentiometer right?
I suppose calling a MAF, a MAF is wrong as well since it doesn't measure airflow. a Vane type does but it doesn't measure the mass density.
I also suppose putting both into a category of MAF sensors is incorrect as well since they don't measure Mass Air Flow directly, its up to the ECU to determin that.
So why not just stick with airflow meter and Mass air sensor or something of the sort
Gez, and this talk about what word to use, SHUT UP you cry babies
Evil, why argue over this? The sensors measure exactly what they are called. Air Flow meter, measures airflow velocity where as Mass Air Flow sensors will measure the mass density or air. Im sure you could call the "thing" known as a AFM, a potentiometer right?
Originally Posted by from your wiki link
Hot wire sensor (MAF) - Unlike the vane meter's paddle sensing element, the hot wire responds directly to air density.
Vane meter sensor - The vane measures air volume, not mass, however by measuring the air temperature and pressure to determine air density.
Vane meter sensor - The vane measures air volume, not mass, however by measuring the air temperature and pressure to determine air density.
I also suppose putting both into a category of MAF sensors is incorrect as well since they don't measure Mass Air Flow directly, its up to the ECU to determin that.
So why not just stick with airflow meter and Mass air sensor or something of the sort
Gez, and this talk about what word to use, SHUT UP you cry babies
Last edited by RotaMan99; 10-27-07 at 06:22 AM.
#20
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
FYI the three most common EFI system types are:
1. Mass Air Flow
2. Speed Density
3. Alpha-N
I think you would agree that the AFM and MAF hot-wire sensors both apply to #1. (If those three terms are not familiar to you, feel free to research them, and you will see what I am talking about.)
Because the orginal poster was not wrong, even though a more accurate term exists.
Thread
Thread Starter
Forum
Replies
Last Post
mulcryant
2nd Generation Specific (1986-1992)
10
09-09-15 05:24 PM
Nosferatu
2nd Generation Specific (1986-1992)
7
09-05-15 02:13 PM