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Date:         Thu, 24 May 2012 08:30:29 -0400
Reply-To:     pickle vanagon <greenvanagon@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         pickle vanagon <greenvanagon@GMAIL.COM>
Subject:      Re: 86 Syncro 2.1 surging at 2K rpm no load
In-Reply-To:  <BAY152-ds169CC2625B16E0CE1D25CEA0000@phx.gbl>
Content-Type: text/plain; charset=ISO-8859-1

When the Hall distributor is bad in a situation like this, what's going on? Is is not sending rpm signal to the ECU at all or does it send incorrect (too slow?) info?

On Thu, May 24, 2012 at 12:38 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote:

> Test the throttle switch electrically. Make sure it is open with the > throttle open. Also test the circuitry. You should see ~ 5 volts across the > switch when it is open. Can also be a bad distributor hall sensor. > > Dennis > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > Daryl Christensen > Sent: Wednesday, May 23, 2012 11:20 PM > To: vanagon@GERRY.VANAGON.COM > Subject: 86 Syncro 2.1 surging at 2K rpm no load > > Ok..Here is one I have never seen before..Dennis ? Mark ? > Hold throttle at about 2000 rpm ( out of gear) and it cuts out and drops > to > about idle and then back up to 2k and drops again, etc.. > Will rev higher if you open throttle quickly and get it above 3k or so. > Idles fine. > Driving it is much better under load, BUT when shifting mostly between 3rd > and 4th, it cuts out during shifting as it goes thru about 2K and feels > like it slams the tranny up against the body..And yes, its mounts are > fine.. > If you feather the clutch it will not slam so badly, so its rpm sensitive > more than load sensitive. > Cruising on the road its fine till you shift again. So, it seems to be > mostly rpm related. > Distributor harness feels OK. AFM traces look great. Can hear the throttle > switch click. > Grounds are tight (not cleaned them yet) I am thinking distributor as it > feels like either the fuel is cutting off or its losing spark for a bit. > > Daryl of AA Transaxle > 425-788-4070 > "On the cutting edge of Old technology" > 86 Syncro Westy w/Turbo Zetec in the trunk > 90 Doka Tristar w/2.5 Subie >


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