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Date:         Wed, 20 Dec 1995 08:57:06 +0000
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         "Brian Isherwood" <bci@roadrunner.circon.com>
Subject:      84 Westy Stumbles - Update includes emissions

Further to my postings over the last few months regarding my 84 Westfalia that would stumble when the O2 sensor was connected;

I took the bus to VW ($$$!) since they have the authority to provide a provisional pass for AirCare if I spend $250 on emmisions repairs. They reset all the fuel system parameters including things like the CO level, mixture, and all that rot, as well as test the CAT which is apparantly fried. Anyhow since the shop rate is about $75/hr and I only authorized $250 worth or work, they didn't get too far in fixing anything, except reseting the FI/Emission settings, and they also replaced a Crankcase Breather Hose ($35 + install). ' The throttle switches are fine, the air flow meter intake boot is fine, the plugs are good, leads are fine, the rest of the FI is good, and various other items which were pointed out to me by the list and TSBs were also checked. I think it had everything to do with the CO levels screwing up the O2 sensor readings, in turn screwing with my bus' mind.

The stumble is now completely eliminated, and the van runs great. I intend to go through testing tomorrow, and VW thinks it should pass even without the new CAT. They also recommended I get proper spark plug leads (of course VW brand...)

I intend to go with new Bosch triple electrode plugs and proper leads in January, in the meantime everything is great again, and I will post the emissions results later.

Special thanks to all those that helped over the past while, specific thanks to Joel for the FI technical information which I used to make sure my $$$ went the right avenue in diagnostics, and to guard myself against the potential of a VW fleecing. Also thanks to Dan Houg, Harvey Chao, and recently Jack Reed for their true experience/solutions.

Happy Holydays.

brian isherwood. - 'now that I've fixed everything on my 84 I want a synchro Westfalia so I can do it all again - and more.'


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