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Date:         Wed, 30 Mar 2016 20:56:08 +0000
Reply-To:     JAIME E FORERO <jforero@SBCGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         JAIME E FORERO <jforero@SBCGLOBAL.NET>
Subject:      Re: Engine Cranks but No Start
Comments: To: Ed McLean <email99@BELLSOUTH.NET>
Content-Type: text/plain; charset=UTF-8

I am late coming in to this discussion but if engine cranks but does not start have you verified that the ignition switch is working? I have replaced 2 switches since I replaced the original switch last year. I have a 91 Vanagon. Cheers Jaime -------------------------------------------- On Wed, 3/30/16, Ed McLean <email99@BELLSOUTH.NET> wrote:

Subject: Re: Engine Cranks but No Start To: vanagon@GERRY.VANAGON.COM Date: Wednesday, March 30, 2016, 12:47 PM If the voltage, measured AT THE BATTERY with a digital volt meter, is less than 10.4 volts with the starter turning the engine the ECU will not work correctly and it won't start.  The starter will, however, still spin the engine over pretty good at this voltage.  I've forgotten if the ECU will fail to produce spark or fail to activate injectors at this voltage because it was about 18+ years ago this happened to me. A simple way to check is to try a booster battery to make sure there is enough voltage.  If it starts, you probably need a new battery although it could be something wrong with your charging system. I've been thinking that maybe the tachometer will not work if the ECU is below this voltage threshold.  Check to see if the tach needle indicates the appropriate cranking speed while cranking.  If it is correct, you don't have any new information but if it doesn't indicate correctly you know that the ECU isn't working.  I don't remember what the tach did when my '86 had this problem.


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