Airflow Mass Meter - SaabCentral Forums
* site search:  
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum

Go Back   SaabCentral Forums > Saab Classic 900, 1979-1993 & '94 Convertible > Saab Classic 900 Workshop
Saab Classic 900 Workshop Classic Saab 900 (1979-1993 & '94 Convertible) Technical Forum.

SaabCentral.com is the premier Saab Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 20th May 2008
Mr. Teal Mr. Teal is offline
Junior Member
 
Join Date: Apr 2008                                                
Location: Victoria, Australia
My Saabs: 1990 900i 2door
Posts: 22
Default Airflow Mass Meter

I tried a meter from another car and the warning light went off and engine sound awsome. So it appears it was faulty. Can it be fixed easily?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 20th May 2008
Matt88S's Avatar
Matt88S Matt88S is offline
Saab on the Brain!
 
Join Date: Aug 2004                                                
Location: Oklahoma, USA
My Saabs: 87&88S,88T,91TVert, 90 Talladega Red SPG
Posts: 5,464
Default

Very. You'll need a screwdriver.

Take screwdriver, unfasten the intake ductwork from the AMM. Disconnect the AMM connector, and connect it to the replacement AMM. Now reconnect the intake ductwork to the replacement AMM.

You're all done, was that easy or what?
__________________
James Bond shifted down into third gear, drifted the Saab 900 Turbo into a tight left-hand turn, clinging to the grass shoulder, then put a fraction more power to bring the car out of the bend.
Reply With Quote Quick reply to this message
  #3  
Old 20th May 2008
Matthew's Avatar
Matthew Matthew is offline
Saab Mad
 
Join Date: Dec 2001                                                
Location: Gloucestershire, UK
My Saabs: 900 S Aero Turbo, 9-5 Aero
Posts: 14,069
Default

Quote:
Originally Posted by Mr. Teal
Can it be fixed easily?
Do you want to fix the AMM itself?
__________________
The path of my life is strewn with cowpats from the devil's own satanic herd
Reply With Quote Quick reply to this message
  #4  
Old 20th May 2008
AUSSIE900 AUSSIE900 is offline
Saab Lunatic
 
Join Date: Aug 2006                                                
Location: Mornington Penisula Vic Australia
My Saabs: 89 900 AERO, 88 900 Aero , 93 900 Aero
Posts: 2,977
Default

You're all done, was that easy or what?

Boy .. I am amazed Matt , I had no idea you could fix these ! Endless talent ..

What should he do with the old one tho ? Paper weight ?
Reply With Quote Quick reply to this message
  #5  
Old 20th May 2008
Mr. Teal Mr. Teal is offline
Junior Member
 
Join Date: Apr 2008                                                
Location: Victoria, Australia
My Saabs: 1990 900i 2door
Posts: 22
Default

I know how to take it off and put it back on again. What i want to know is: What can go wrong with the part and how can that be fixed?
Reply With Quote Quick reply to this message
  #6  
Old 20th May 2008
Albert Trout's Avatar
Albert Trout Albert Trout is offline
Saab Lunatic
 
Join Date: Jul 2005                                                
Location: Glasgow
My Saabs: Ehh....none
Posts: 2,996
Default

If it's broken it's broken. No DIY fix for them. Just got to bite the bullet and get a new one.
__________________
MMmmmmmm. Juicy Fruit.
Reply With Quote Quick reply to this message
  #7  
Old 20th May 2008
Mr.Wallace Mr.Wallace is offline
Active Member
 
Join Date: Apr 2008                                                
Location: UK
My Saabs: 900
Posts: 89
Default

Quote:
Originally Posted by Mr. Teal
What can go wrong with the part and how can that be fixed?
Everything can be fixed, oil and dust can cover the hot and cold wires, you can take it apart and blast it with brake cleaner, check the continuity and resistance of your thermistor, it should be around 8K Ω ohms at room temperature, if its higher than say 10K Ω replace it, it will cost you 20p
Reply With Quote Quick reply to this message
  #8  
Old 20th May 2008
Matt88S's Avatar
Matt88S Matt88S is offline
Saab on the Brain!
 
Join Date: Aug 2004                                                
Location: Oklahoma, USA
My Saabs: 87&88S,88T,91TVert, 90 Talladega Red SPG
Posts: 5,464
Default

Quote:
Originally Posted by AUSSIE900
You're all done, was that easy or what?

Boy .. I am amazed Matt , I had no idea you could fix these ! Endless talent ..

What should he do with the old one tho ? Paper weight ?
Just a little good natured humor.

Quote:
Originally Posted by Mr.Wallace
Everything can be fixed, oil and dust can cover the hot and cold wires, you can take it apart and blast it with brake cleaner, check the continuity and resistance of your thermistor, it should be around 8K Ω ohms at room temperature, if its higher than say 10K Ω replace it, it will cost you 20p
I have much the same attitude, but I took one for my 88 900S apart, and inside, mounted in a gelatin like gell were wires that appeared to be as fine as a human hair. I put it back together and moved on because my sodering skills are not quite up to that level.

They are rebuildable, you can buy rebuilt ones so they have to be, but I'm betting its not something you can DIY easily. I want to say you can send them to Bosch to be rebuilt like you can do with the ECU's, but I don't know where you send them anymore, and even if you did, it would probably cost almost as much to do that as it would to buy a $150 rebuilt one from eeuroparts or the like.
__________________
James Bond shifted down into third gear, drifted the Saab 900 Turbo into a tight left-hand turn, clinging to the grass shoulder, then put a fraction more power to bring the car out of the bend.
Reply With Quote Quick reply to this message
  #9  
Old 21st May 2008
Albert Trout's Avatar
Albert Trout Albert Trout is offline
Saab Lunatic
 
Join Date: Jul 2005                                                
Location: Glasgow
My Saabs: Ehh....none
Posts: 2,996
Default

Quote:
Originally Posted by Mr.Wallace
Everything can be fixed, oil and dust can cover the hot and cold wires, you can take it apart and blast it with brake cleaner, check the continuity and resistance of your thermistor, it should be around 8K Ω ohms at room temperature, if its higher than say 10K Ω replace it, it will cost you 20p
So that's the only thing that goes wrong with them?
__________________
MMmmmmmm. Juicy Fruit.
Reply With Quote Quick reply to this message
  #10  
Old 21st May 2008
Mr.Wallace Mr.Wallace is offline
Active Member
 
Join Date: Apr 2008                                                
Location: UK
My Saabs: 900
Posts: 89
Default

Quote:
Originally Posted by Albert Trout
So that's the only thing that goes wrong with them?
Why would you ask if only one thing can break down in a system component that has over 50 parts? the most weather exposed parts should fail first.
Reply With Quote Quick reply to this message
  #11  
Old 21st May 2008
Albert Trout's Avatar
Albert Trout Albert Trout is offline
Saab Lunatic
 
Join Date: Jul 2005                                                
Location: Glasgow
My Saabs: Ehh....none
Posts: 2,996
Default

I may have taken it the wrong way but you implied fixing an AMM was a DIY-able job. How would go about troubleshooting and fixing the other 50 parts? I'm interested as I had an AMM fail and was told by my Saab mechanic to get a replacement one. Also, how do oil and dust get into the AMM when it sits at the back of the air filter?
__________________
MMmmmmmm. Juicy Fruit.
Reply With Quote Quick reply to this message
  #12  
Old 21st May 2008
Mr.Wallace Mr.Wallace is offline
Active Member
 
Join Date: Apr 2008                                                
Location: UK
My Saabs: 900
Posts: 89
Default

Quote:
Originally Posted by Albert Trout
I had an AMM fail and was told by my Saab mechanic to get a replacement one. Also, how do oil and dust get into the AMM when it sits at the back of the air filter?
Mechanics are not electronic engineers or circuit designers, air filters do not remove smaller particals then the mesh will allow, exhaust fumes are not filtered out by air filters.
Reply With Quote Quick reply to this message
  #13  
Old 21st May 2008
TheRedBaron's Avatar
TheRedBaron TheRedBaron is offline
Saab on the Brain!
 
Join Date: Aug 2006                                                
Location: Washington, DC
My Saabs: 1990 900 turbo
Posts: 5,779
Default

There are generic AMM rebuilding places that will rebuild any AMM/MAF/etc
__________________
The faster you go, the more you see.
Reply With Quote Quick reply to this message
  #14  
Old 22nd May 2008
AUSSIE900 AUSSIE900 is offline
Saab Lunatic
 
Join Date: Aug 2006                                                
Location: Mornington Penisula Vic Australia
My Saabs: 89 900 AERO, 88 900 Aero , 93 900 Aero
Posts: 2,977
Default

Red is spot on , there are generic places that specialise in re man'ing AMM's Ecu's Ignition modules etc .

***Mechanics are not electronic engineers or circuit designers, air filters do not remove smaller particals then the mesh will allow, exhaust fumes are not filtered out by air filters.***

And neither are 99.99% of the people who read this forum looking for sound DIY instructions .

I think the point Alfred is making is very valid , its beyond the realm of DIY ,
HOW do you diagnose without expensive test equipment ?
To the original poster

I think there are 3 options on replacement .

Punt on a U pull it $20 special ...

Get a Remanned unit Europarts or similar

Or ask an *expert* to quote on the repair of your unit .

OR 4 u r the one in a thousand who is .. an electonics engineer
Nah delete that .. You would not have asked the question !

Last edited by AUSSIE900; 22nd May 2008 at 07:07 AM. Reason: 4th option!!
Reply With Quote Quick reply to this message
  #15  
Old 22nd May 2008
Albert Trout's Avatar
Albert Trout Albert Trout is offline
Saab Lunatic
 
Join Date: Jul 2005                                                
Location: Glasgow
My Saabs: Ehh....none
Posts: 2,996
Default

I was young and inexperienced when it failed and paid 130 for a rebuilt unit
__________________
MMmmmmmm. Juicy Fruit.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 -4. The time now is 08:40 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

top of page | sitemap | email us



copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.