Date:         Sat, 3 Mar 2001 19:17:24 -0800
Reply-To:     David Marshall <david@VOLKSWAGEN.ORG>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Marshall <david@VOLKSWAGEN.ORG>
Subject:      Re: [Syncro] AFM testing
Comments: To: Double-Cab Guy <doublecabguy@powersurfr.com>,
          Syncro@yahoogroups.com
In-Reply-To:  <000c01c0a39a$f0e4ee40$0a266c18@powersurfr.com>
Content-Type: text/plain; charset="iso-8859-1"

Glen... I would have though all that top notch military training would have
prepared you for something like this!  :)

You are looking for OHMS or resistance.  You need an analog meter to get a
really good result from this as you are looking for a smooth increase or
decrease in the resistance.

With the AFM on the table in front of you and the black plastic cap on top
pin one is on the left.  Pins 2 and 4 are the air-flow meter, pins 1 and 4
are the temp sender.  You should be able to move the AFM slowly and not see
any spikes or dips in resistance.  A digital multimeter isn't fast enough to
pickup these dips or spikes.


David Marshall

Fast Forward Autobahn Sport Tuning
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3
mailto:info@fastforward.ca      http://www.fastforward.ca
Phone: (250) 992 7775           FAX: (250) 992 1160

• Vanagon Accessories and Engine Conversions
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-----Original Message-----
From: Double-Cab Guy [mailto:doublecabguy@powersurfr.com]
Sent: March 2, 2001 8:32 PM
To: Vanagon; Syncro@yahoogroups.com
Subject: [Syncro] AFM testing


Hi Volks,

I have my AFM out of the vehicle. and in front of me with my multimeter.
Can any one tell me which pins I need to connect to, for checking the meter?
They are not numbered, so if you could tell me from the prospective of
looking straight at the connection on the AFM.
Is it resistance or volts that I need to watch as I move the flap?
Is it just a smooth increase in the numbers or is there a set range of
numbers?
I don't have my Bentley or the vehicle with me at this time, only the AFM it
self minus the air box.

Thanks
Glen

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