156: MAF/AFm sensor voltages - Alfa Romeo Forum
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Black Beauty's Avatar
Join Date: Feb 2005
Location: Ireland
Posts: 1,421

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156 2.0L TS

Thumbs Up 156: MAF/AFm sensor voltages

As a follow up to my last 24 hours of torture I decide to *give back* a little info to the A0 community.

Attched is a picture of *Alfenia's* MAF/AFM sensor's connector, Pins 1 to 5.

With engine stopped & key at MAR:

1. 3.65 v
2. 12.0 v
3. 0.00 v
4. 4.95 v
5. 1.08 v

With engine running & key at MAR:

1. 3.65 v
2. 12.0 v
3. 0.00 v
4. 4.95 v
5. 2.34 v this varies depending on engine rev's

Again, many thanks to all for their feedback.

As some of you know this is my 1st Alfa, despite what i wrote earlier it *may* not be my last...... JTD ???

I have heard soooooo much about how *bad* the electrics/electronics are that I was already very nervous about ever having to work on this car myself. After yesterday experience I now realise that there is alot of *basic* stuff that can be covered by a DIY'er like myself before heading to the *Serpent & Cross* garage.

Again, thanks.
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156 , maf or afm , sensor , voltages

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