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) |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.