All this talk about O2 sensors, and yes I replaced mine looking for the miracle cure to low fuel mileage and performance (how slowly we learn the inevitable). Here's a nugget FWIW. One can adjust the air mixture screw, in a rough but adequate sort of way, by hooking a *digital* voltmeter to the disconnected O2 sensor lead and watching the changing values. Adjust the air mixture screw to get as close to 500 mv on a warmed up engine. A properly adjusted air mixture will give alternating high/low voltages on either side of about 500mv when the O2 wire is hooked into the computer and giving mixture feedback. This is not a complete substitute for a 4-gas analysis (I'm still saving for the unit, buy it right after shoes for the kids) but it gets you close and is better than the random turning of the mixture screw we've all done. BTW, if you do happen to have a CO meter, it is ESSENTIAL to take your reading at the test plug *before* the catalytic converter, otherwise you will get low CO values not representative of the exhaust.
Daniel Houg Minnesota Department of Health Internet Address: fairwind@northernnet.com Fax #: 218/755-3823
|
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Vanagon mail messages have been archived.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.