5000TQ deceleration and stalling

[Ben Swann]

This is one time I'd suggest the obvious culprit - the Idle Stabilizer
Valve.  It is probably sticking closed or possibly not getting a good
connection.

Often problems are high idle and caused more by throttle body switch or
wiring, but in this case I'd rule out the valve first.  Usually it sticks
open causing a high idle, but can stick closed or not be getting a good
electrical contact.

Ben

[Date: Wed, 27 Jul 2005 15:42:12 -0400
From: "Stricker, Michael" <Michael.Stricker at gd-ais.com>
Subject: 5000TQ deceleration and stalling
To: <quattro at audifans.com>
Message-ID:
<F1FF190DD197D24888AD1D460715E304158913 at MAPF01-MAIL01.ad.gd-ais.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi,

My 1988 5ktq has an intermittent problem where it sometimes stalls upon
deceleration.  If I "blip" the throttle a couple of times as I see the RPM's
heading toward 0, I can avoid this problem.  So far, I've disconnected the
deceleration valve to no avail.  It seems to do this only after the vehicle
has warmed up so I suspect it is temperature related.

Does anybody have any ideas of what to try next?

Thanks in advance.

Mike]