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Date:         Sat, 16 Apr 2016 14:33:57 -0700
Reply-To:     Tyler Hardison <tyler@SERAPH-NET.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tyler Hardison <tyler@SERAPH-NET.NET>
Subject:      Re: Engine stalling at high speed
Comments: To: Stuart MacMillan <stuartmacm@gmail.com>
In-Reply-To:  <020801d1981a$82759290$8760b7b0$@gmail.com>
Content-Type: text/plain; charset=UTF-8

One switch. My build date is 3/85

On Saturday, April 16, 2016, Stuart MacMillan <stuartmacm@gmail.com> wrote:

> My '85 with a build date of 8/84 has the two switches. Missed the cut, and > Tyler's might have too. > > Stuart > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com > <javascript:;>] On Behalf Of Dennis Haynes > Sent: Saturday, April 16, 2016 12:32 PM > To: vanagon@GERRY.VANAGON.COM <javascript:;> > Subject: Re: Engine stalling at high speed > > The 2 separate throttle switches was replaced with the single cam switch > somewhere mid 84. All 85's have the later set up. 86 with the 2.1 also go a > larger throttle plate. > > However speaking of blockages a catalyst that is broken down into ta golf > ball size chunk can also block the exhaust causing engine shut down. If > exhaust can’t get out air can’t get in. > > Dennis > > > -----Original Message----- > From: Stuart MacMillan [mailto:stuartmacm@gmail.com <javascript:;>] > Sent: Saturday, April 16, 2016 3:14 PM > To: 'Dennis Haynes' <d23haynes57@HOTMAIL.COM <javascript:;>>; > vanagon@GERRY.VANAGON.COM <javascript:;>; Tyler Hardison < > tyler@SERAPH-NET.NET <javascript:;>> > Subject: RE: Engine stalling at high speed > > Tyler has the single wire '85 1.9 O2 sensor according to his first post. > Any short would be directly to that wire, easy to check at the harness > connection with an ohm meter. That also means he has two throttle position > switches, one closed throttle and one full throttle. Misadjusted closed > switch will give bucking when crusing around 35 mph but it will clear > beyond that. > > My money is on a clogged fuel pick up in the tank. I've heard of > cardboard getting into improperly packaged tanks and causing this. :-( > > Stuart > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com > <javascript:;>] On Behalf Of Dennis Haynes > Sent: Saturday, April 16, 2016 11:18 AM > To: vanagon@GERRY.VANAGON.COM <javascript:;> > Subject: Re: Engine stalling at high speed > > When opening the throttle makes things worse it is usually a fuel delivery > problem, too lean or too rich can have a similar feel. Try resetting the > ignition switch while still rolling. The steering should not lock until the > key is turned all the way off and then lifted as when being removed so > there should not be a fear of that. If it clears and goes for a while than > most likely you have an O2 sensor circuit problem. Could be bad sensor or a > wiring problem. A simple wiring test if you have ammeter handy is as > follows. Disconnect the sensor and strip back the outer jacket on that > green wire to get to the outer braid. With the ignition on (engine not > running) check the voltage from the O2 sensor connection to the chassis. > Should be ~.5 to .6 volt. Now check the outer braid to chassis. Must be > real close to "0". Start engine and check again. Should be the same. If the > outer braid is getting stray voltages you have a grounding problem. > Anything near or .2 or above can put the ECU into a runaway rich condition. > > Dennis > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com > <javascript:;>] On Behalf Of Tyler Hardison > Sent: Saturday, April 16, 2016 1:12 PM > To: vanagon@GERRY.VANAGON.COM <javascript:;> > Subject: Re: Engine stalling at high speed > > The engine behaves like it has a very extreme rev limiter in place. If I > press in the clutch it dies. From there I can restart the engine like > nothing happened. > > The AFM was replaced June of last year. > > O2 sensor around the same time. > > Coolant temp sensor in July of last year. > > Cleaned and tested the auxiliary air valve last month. > > New throttle body gasket last month. > > New fuel filters last month. > > New fuel tank two weeks ago. > > This problem feels electrical to me. Fuel starvation should cause poor > running like a lean condition. Right? >


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