Date: Mon, 10 Feb 2014 14:12:53 -0700
Reply-To: Gregory Smith <gfs@GREGORYFSMITH.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Gregory Smith <gfs@GREGORYFSMITH.COM>
Subject: '88 GL ignition miss, stalling
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<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Hi fellow listers,</div><div><br></div><div>I've been struggling to fix an intermittent ignition miss on my '88 GL. It started several months ago, came on gradually. At first I could feel it, then I noticed the tach dropping out when it happened. Eventually it would stall and restart, sometimes causing a backfire.</div><div><br></div><div>Initially I suspected the ignition, so I did a full tune-up parts replacement. Plugs, cap, rotor, wires. Thought it was fixed but it came back in a day or two. I ran the Bentley tests. Eventually I decided that the hall effect sensor was bad, it had a loose socket anyway. I replaced that with one from another distributor and while I was at it replaced the business end of the wire harness as well as the ground wire at that end, they were all corroded and had bad insulation. Also replaced the ignition switch electrical part.<br></div><div><br></div><div>This seemed to fix it for exactly 2 months. Then it started again. I ordered a new hall sensor and replaced it this past weekend. Ran the Bentley tests again, everything checks out. The problem was gone for 1 day, came back this morning.<br></div><div><br></div><div>I'm left with the ECU, like possibly cracked solder joints or something like that, or possibly the power wire to the ECU from the alternator. I read about this on the Samba, someone found this wire frayed inside the insulation, under the AFM. I'll check on this today.</div><div><br></div><div>Another thing that sometimes occurs that may be related, but is not synchronized with this problem is sometimes while driving the seatbelt warning light will come one and go back out (I think it's on a timer).<br></div><div><br></div><div>Ideas welcome, and thanks.<br></div><div><br></div><div>Gregory Smith</div><div>Olympia WA, USA<br></div><div>'88 Vanagon GL</div><div><br></div></span></body></html>
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