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Date:         Wed, 9 Jul 2014 09:36:38 -0700
Reply-To:     Don Hanson <dhanson928@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Don Hanson <dhanson928@GMAIL.COM>
Subject:      Further report on 'de-bunked Vanagon Syndrome" fix...
Comments: To: "Vanagons and VW Buses (Bays) with VW inline gas engines"
          <vanagons-with-vw-inline-4-cylinder-gas-engines@googlegroups.com>
Content-Type: text/plain; charset=UTF-8

A week or so ago I had weird intermittent missing problems with my inline ABA motored Vanagon, which I fixed, with the Lists' help, by changing my O2 sensor, re-attaching a loose vacuum line and replacing my Temp II sensor.

I strongly suspect I had two issues going on...the main one being that the wiring between the O2 sensor and the Brain was almost worn through. And the minor longer time ongoing issue I was having with somewhat irregular 'resume throttle' response, that was most likely the fault of the disconnected vacuum line over to a warm up flap in the intake.. (I think)

I've run two tanks of gas through now, mostly highway driving in very windy conditions. I've seen almost 3 miles per gallon increase. I strongly suspect now that the O2 sensor may have been essentially inoperative for about a year now...when I did some intake work the last time, I noticed my gas mileage began to decline to about 21-22mpg but now it is back to ~25mpg, like it was prior to that old work...My throttle response is again clean and predictable, also..

Love it when I fix a problem and find I have a 'bonus'....


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