Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (January 2001, week 3)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Fri, 19 Jan 2001 17:17:51 -0700
Reply-To:     Mark Keller <kelphoto@ISLANDNET.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Keller <kelphoto@ISLANDNET.COM>
Subject:      Bad in town Mileage
Comments: To: Craig Spaeth <spaeth@GORGE.NET>
Content-Type: text/plain; charset=us-ascii

During testing of my O2 sensor, I found that the VW Temp II sensor seems to engage the closed loop operation sooner than an aftermarket type, which admittedly ran only a minute or so longer in closed loop. So even thought the O2 sensor must be at operating temperature, it appeared to me that the Temp II sensor in my case was the slower of the two in a cold engine start up.

So if you want to experiment put a volt meter on the O2 sensor black lead and time how long the system is in open loop. You might also note the voltages just before the closed loop starts. If the volts are .7 or higher. you might need to adjust the AFM spring or or wiper arm. I believe Darrell's site contains the instructions.

The theory being that the rich running engine will be leaned by closed loop operation sooner.

Sincerely,

Mark Keller 91 Carat


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived.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.