<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Well shoot.&nbsp; I still can't find the fault.&nbsp; <br><br>I've checked the wiring, fusebox, ran all the tests.&nbsp; It hasn't faulted except on the road, and can be so bad as to not restart sometimes.&nbsp; Do hall senders do this?&nbsp; Intermittent?&nbsp; </div><div><br></div><div>When it happens, it's definitely ignition failure, and it can cause that "backfire" noise through the exhaust when the ignition comes back online.&nbsp; The tach shows the ignition cutting out.&nbsp; I have a test light on the (15) terminal of the coil to see if it loses power when it faults, but of course it hasn't done it since I hooked up the test light. <br><br>The coil tests good, the wiring checks out, ignition switch good (new).&nbsp; The testing suggests it's either a faulting hall sender or ECU.&nbsp; Anyone have similar symptoms and how did you resolve it?</div><div><br></div><div>Gregory Smith<br>'88 Vanagon GL</div><div>'77 Lancia Scorpion<br>Olympia, WA</div>
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-------- Original Message --------<br>
Subject: Re: '88 GL intermittent ignition miss (update)<br>
From: mark drillock &lt;<a href="mailto:mdrillock@cox.net">mdrillock@cox.net</a>&gt;<br>
Date: Thu, November 21, 2013 12:15 pm<br>
To: Gregory Smith &lt;<a href="mailto:gfs@GREGORYFSMITH.COM">gfs@GREGORYFSMITH.COM</a>&gt;,  Vanagon mailing list<br>
&lt;<a href="mailto:vanagon@gerry.vanagon.com">vanagon@gerry.vanagon.com</a>&gt;<br>
<br>
It is good to have a working throttle switch but I doubt it will fully <br>
solve your symptoms. It primarily is needed to tell the ECU and idle <br>
control unit that you foot is off the gas. Unless the switch is sticking <br>
closed it won't come into play just cruising down the road under power. <br>
To test that it isn't sticking and thus causing a problem while cruising <br>
you can unplug the connector to it and see if the cruising problem <br>
clears up.<br>
<br>
Mark<br>
<br>
Gregory Smith wrote:<br>
&gt; A further update to my problem.  Turns out the bad distributor harness<br>
&gt; wiring, while truly frightening, was not the cause of this problem I was<br>
&gt; having.  Driving it the following day revealed the problem was still<br>
&gt; there, and getting worse.<br>
&gt;<br>
&gt; I downloaded the Digifant troubleshooting pages following a link on<br>
&gt; VanCafe, discovering later they're also in my Bentley.  Ran through the<br>
&gt; tests, checks and adjustments to find my Throttle Position Switch not<br>
&gt; closing when the throttle closed.  First checked via human ear, then<br>
&gt; with VOM.  Adjusted and retested to ensure switch closure with throttle.<br>
&gt; Not clear if something wore out of adjustment or what there, I have not<br>
&gt; touched it previously in a few years of ownership.<br>
&gt;<br>
&gt; Next day (yesterday) driving revealed no symptoms.  I'm not 100% sure of<br>
&gt; this fix yet, but compared to the night before (had to pull over twice<br>
&gt; because of the problem) it's 100% better at least.  Will report back<br>
&gt; later today.<br>

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