Date: Fri, 9 Jul 2010 11:52:19 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: engine revving at idle
Content-Type: text/plain; charset="iso-8859-1"
it came from this guy on thesamba I think...
Chris Corkin
http://www.thesamba.com/vw/classifieds/detail.php?id=514460
on the the part it says
Vanagonperformance.com .
VAC2 SN : 00107
Electronic Throttle Switch
----- Original Message -----
From: Ry
To: Scott Daniel - Turbovans
Cc: vanagon@gerry.vanagon.com
Sent: Friday, July 09, 2010 6:48 AM
Subject: Re: engine revving at idle
got a link for us to this pressure switch replacement for the throttle position switch?
-Ry
http://www.google.com/profiles/rylincoln
On Fri, Jul 9, 2010 at 2:23 AM, Scott Daniel - Turbovans <scottdaniel@turbovans.com> wrote:
re
Is it just a matter of adjusting the
throttle valve?
no, you adjust the throttle switch.
On a 2.1 it can be tricky, and sometimes they're stuck in one position, and
sometimes they're just corroded and won't move, and sometimes they'll move
and adjust but won't reach correct adjustment.
it takes a small allen wrench ..
it's loosen a clamp screw, turn an excentric, down in there.
I just discovered a device that totally transcends this mechanical switch ..
and that is a dodgey system after years and millions of miles..
the throttle bodies do wear, plus what I mentioned about the switch above.
there is an electronic replacement. I'l lbe installing one by the end of
july ..
it's a pressure sensor that signals the ecu when idle and WOT are happening
..
and it does it by sensing air pressure, NOT by mechanical position of
something ..
should be 300 % more accurate and consistent, at least.
Scott
www.turbovans.com
----- Original Message -----
From: "Mark" <mbrush@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, July 08, 2010 6:02 PM
Subject: Re: engine revving at idle
Thanks for all the suggestions - not sure, but I think I found a problem
with my throttle valve switch. I followed the test on page 24.59 of the
Bentley "Throttle valve switch, checking and adjusting."
I get continuity when I start the test, at idle. Continuity breaks when I
open the throttle (continuity good at full throttle), but then when I do
as
the manual says and "close [the throttle] slowly" - I get no continuity at
idle again. I can only get continuity again when I open throttle and let
it
snap back into place.
Seems to explain my symptoms since it says "warm engine will have NO fuel
deceleration shut-off or DLS function at idle" if gap is too small....
but I can't get any continuity when I "slowly" bring back into place
So what now? How do I fix this? Is it just a matter of adjusting the
throttle valve? Why does it get continuity when it snaps back into place,
but not when I slowly bring it back?
On Wed, Jul 7, 2010 at 11:36 PM, Mark <mbrush@gmail.com> wrote:
Has anyone had this problem? After my engine reaches operating temp and
is
in stop and go traffic, it doesn't fall back down to idle after I
accelerate
to move forward in traffic. It just stays revved at 3,000 rpm or
thereabouts. Not fun when stuck in traffic. I'm thinking it has
something
to do with the spring on the throttle (maybe needs to be cleaned or
greased?). I haven't worked on this part of the van yet, so I'm not
familiar with how the accelerator cable hooks up and works in the engine
compartment.
Thanks for any insights!
Mark
--
Mark
1990 Westy (2.1 - manual)
--
Mark
1990 Westy (2.1 - manual)
