Vanagon EuroVan
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Date:         Mon, 15 Sep 2003 12:06:03 -0600
Reply-To:     Keith Adams <keith_adams@TRANSCANADA.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Keith Adams <keith_adams@TRANSCANADA.COM>
Organization: TransCanada
Subject:      Resetting the ECU and hesitating
Content-type: text/plain; charset=us-ascii

I'll have to rephrase my question from a couple of weeks ago into the form of the problem. I wanted to know which systems were influenced by resetting of the ECU.

My 86 2.1 2WD van has developed "The Vanagon Syndrome" but BEFORE anybody starts emailing me about capacitors and pigtails and other such goop, I already have the factory AFM pigtail harness, a'ight? Save those emails.

My van will hesitate, lose power and run brutally rich, and turning off the key and turning it back on quickly will reset it and get rid of the problem. For a few seconds. Now, it doesn't only do this on the highway at sustained speeds, it will do it around town. It has done it to me just idling in the driveway, from a cold start to not even being warm yet. Ran fine, then ran rich, spat black soot on my driveway, sputtered (dying idle) and died. It will also go away for a while, then come back (unpredictable).

My first head scratching instinct is to suspect the idle circuit or possibly the fuel pressure regulator (but it's not part of anything electrical connected to ECU)? Since it does it before even getting warm, I presume it's not O2 sensor related. It seems to have started doing this after running out of gas, but I replaced the fuel filter already (brand new one too, grrrr....). That's why I was looking for what systems resetting the ECU will affect...

Danke schoen Keith Adams calgary.ab.ca 86 Westy


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