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Discussion Starter #1 (Edited)
Signs are pointing towards a failing MAF sensor I think (rich mixture, black smoke), am I to understand there is supposed to be a filament hanging from the small wafer inside the sensor? (If so I have no such filament, only the wafer).



I can't find a decent picture of it in the Haynes manual or in the WIS.

Anyone know procedure for how to test for resistance and on which pins?

-zen
 

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I doubt if you, or anyone will find any decent photos in the Haynes..
Haynes uses "grammes" a unit of measuring quantities of air flow.
No flow............... = 0.2 volts
33 grammes/sec = 2.6 v
133..... ...............= 4.6 v
Haynes does not seem to give any testing detail...only some specs and R and R instructions which are generally useless....the air flow numbers I have given is probably useless as well.

I have never serviced a MAF....I should at least check mine, the MPG is not so good (22.7)

http://www.saabcentral.com/forums/showthread.php?t=89810&highlight=mass+flow

Hope this helps ; the thread originator titled it as ...MAF.. making the search ever so quick and easy..There could be 7,213 threads on this subject..
 

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Discussion Starter #3
Is there supposed to be a filament/wire coming from the small wafer chip extending to the bottom of the rectangle enclosure in the photo I posted?

I remember on my Ford Probe the MAF had a filament, I don't' see one on the SAAB MAF. Hence I'm wondering if it's malfunctioning.

-zen

earthworm said:
I doubt if you, or anyone will find any decent photos in the Haynes..
Haynes uses "grammes" a unit of measuring quantities of air flow.
No flow............... = 0.2 volts
33 grammes/sec = 2.6 v
133..... ...............= 4.6 v
Haynes does not seem to give any testing detail...only some specs and R and R instructions which are generally useless....the air flow numbers I have given is probably useless as well.

I have never serviced a MAF....I should at least check mine, the MPG is not so good (22.7)
 

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The filament is fragile, the miles high, the age great, heat and vibration do it again...

The odds are against the MAF's effective life beyond 10 years, 150K miles ...
 

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Discussion Starter #5
Is running rich a symptom of a failing MAF?

As for the photo, I'm not sure if I'm explaining myself properly. Is the wafer the filament? Or should there be a filament extending from that wafer to the bottom of the MAF housing? (the area I circled in the photo)

-zen

earthworm said:
The filament is fragile, the miles high, the age great, heat and vibration do it again...

The odds are against the MAF's effective life beyond 10 years, 150K miles ...
 
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