OT-Digifant Jetta Question

[mr.utility at highstream.net (David Utley)]

Digifant cars use a Mass Air flow meter that delivers info to the computer
via a copper contact that slides up and down a path of carbon on a circuit
board...  As the unit gets older, the path gets more and more worn over
time, esp where there is the most wear...  Between idle and 2500 rpm is the
most common area of these to begin to give the computer erratic
information....  What has most likely happened is the copper foot has worn
through the circuit board at certain points, esp at the speeds you
mentioned...  I would take the thing off, and put a digital mulitmeter to it
and see if it gave you a clean, consistent and gradual ohm change from rest
position to open throttle position...  If not, it is most definitely your
problem.  If so, then look elsewhere for the culprit...

HTH

David

-----Original Message-----
From: scirocco-l-bounces@scirocco.org
[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Rick Kellner
Sent: Saturday, February 07, 2004 11:54 AM
To: 'scirocco list'
Subject: OT-Digifant Jetta Question

My DD, a 91 Jetta 1.8l Digifant, has an annoying running problem.  It
will stumble or stutter at low RPM when you first give it some gas.
Basically, if the car is idling and you give it a quick tap on the
accelerator, it will run rough and stumble between 1k and 2k rpms.  It
acts like a carbureted car when the accelerator pump on is the way out.

Any ideas?

Thanks, Rick K.
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