As others have posted on this list previously, disconnect the O2 sensor when van is cold. Put a good voltmeter on the leads and watch what happens. Remember something about voltage when van is warm hangs around 0.5 volt. john On Fri, 2019-03-22 at 09:46 -0700, Dan Lamb wrote: > Sounds like what happens when O2 sensor fails. Ecu never sees the sensor warm > up so leaves mixture rich and mpg goes down. They can be tested. May also need > to check connection for deterioration. > Sent from my iPhone > > On Mar 22, 2019, at 9:36 AM, Dan N <dn92610@gmail.com> wrote: > > hi all, > > 1990 tintop 2.1 WBX seems running rich and low mpg. Fresh tune up - > > sparkplugs, dist. cap and rotor, new Temp2 sensor, vacuum lines > > checked,throttle body clicking right, fresh air filter and fuel filter, new > > coil,swapped in a known good used AFM but still running rich... running good > > nohesitation or stumbling, good idle @ 900 rpm, coolant gauge needle > > justunder the red dot. > > so the questions are: > > - is there a problem with the injectors? should I get new ones?- is there > > adjustment somewhere to do? ie. adjusting the AFM? > > thanks in advance > > dan |
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Vanagon mail messages have been archived.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.