Date: Fri, 19 Oct 2001 22:24:37 -0700
Reply-To: David Marshall <vanagon@VOLKSWAGEN.ORG>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Marshall <vanagon@VOLKSWAGEN.ORG>
Subject: Re: As anyone successfully fixed an AFM? - I fixed one!
In-Reply-To: <AIEFIGCNNANNIHLNFBPEEEKGECAA.vanagon@volkswagen.org>
Content-Type: text/plain; charset="iso-8859-1"
The AFM is a pretty simple device once you dive into it. The problem with
the one that I opened up was it was making the vehicle "stutter" on the
highway. I took the black cap off of the AFM to expose the internals.
Inside is a circuit board with a large carbon track that an arms sweeps
over - this carbon track was worn out where the arm usually sits during
normal driving so it was quite worn out - actually you could see the white
fibreglass board underneath of it. Solution - remove the three screws
holding the board in place - not quite that easy as they are installed with
lock tight. Once they are out (had to drill one of them) make the holes in
the PCB larger by about 2 drill bit sizes that the original holes. Remount
the PCB and make sure that you offset (north-south) the PCB so the arm is
running in "fresh" territory. Installed the AFM back in the van and we had
no problems.... still the ultimate solution is to buy a new one for find a
source for these PCBs, but it is a good trick to wring a few more kilometers
out of an AFM.
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada V2J 6Z3
mailto:info@fastforward.ca <mailto:info@fastforward.ca>
http://www.fastforward.ca <http://www.fastforward.ca>
Phone: (250) 992 7775 FAX: (250) 992 1160
• Vanagon Accessories and Engine Conversions
• Transporter, Unimog and Iltis Sales
• European Lighting for most Audi and Volkswagen models
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of David Marshall
Sent: October 17, 2001 6:46 PM
To: vanagon@GERRY.VANAGON.COM
Subject: As anyone successfully fixed an AFM?
I have a few Air Flow Meters here that have seen better days... any "home
brew" ways of fixing them? Does anyone have a chart that show the high and
low resistance of the AFM and the resistance of the temp sensor?
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada V2J 6Z3
mailto:info@fastforward.ca <mailto:info@fastforward.ca>
http://www.fastforward.ca <http://www.fastforward.ca>
Phone: (250) 992 7775 FAX: (250) 992 1160
• Vanagon Accessories and Engine Conversions
• Transporter, Unimog and Iltis Sales
• European Lighting for most Audi and Volkswagen models