Date: Thu, 20 May 2004 08:20:03 -0700
Reply-To: TinkerMan <tinkerman007@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: TinkerMan <tinkerman007@YAHOO.COM>
Subject: Re: Vanagon GL 90 2.1L engine unexpectedly stalls while
driving
In-Reply-To: <002b01c43e54$befaa9d0$15e43f40@korky>
Content-Type: text/plain; charset=us-ascii
--- Ken Lewis <kdlewis_wasting_time@access4less.net>
wrote:
> Mr.T,
> I suspect the Hall Effect sensor in the distrib. To
> test: remove and ground
> the center coil wire for safety. Turn on ignition
> and turn the engine by
> hand. You should here the injectors fire evry time
> the Hall fires.
I thought the Hall Effect sensor produced the timing
for creating the spark, not the injection pulses. Am I
wrong then?
Or maybe it triggers both injectors AND spark (via
coil) all by controlling the ECU which controls both
spark and injectors? So you're suggesting testing it
by listening to the injectors (while disabling the
spark for safety purpose)?
Anyway, the problem occurs irregularily, and by the
time I've disconnected the coil and turned the motor
manualy it might have been solved by itself.
I need to analyze the problem immediately without
touching anything.
BTW, wouldn't turning the motor manually be physically
difficult? What would you recommend? I thought an open
wrench on the main pully would do. Any better idea?
> Ken Lewis
> 86 Transporter Crew Cab
> 60 356 T-5 Porsche
> http://neksiwel.20m.com/
> Vanagon tech, pixs, O2 monitor gadget
> ----- Original Message -----
> From: "TinkerMan" <tinkerman007@YAHOO.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Wednesday, May 19, 2004 6:25 PM
> Subject: [VANAGON] Vanagon GL 90 2.1L engine
> unexpectedly stalls while
> driving
>
>
> > Hello Volks!
> >
> > I have this problem for some time. The problem is
> that
> > it doesn't occur frequently enough to easaily
> analyze
> > it.
> >
> > Description: The motor just turns off and refuses
> to
> > restart.
> > The motor isn't cold (been driving at least 10
> > minutes. Cold start was easy).
> > I notice that it's probably not a fuel problem
> because
> > the exhaust smells of unburnt gasoline.
> > I also hear the fuel pump turn on and off right
> after
> > I switch the ignition, as it should.
> >
> > I usually play with the AFM connector, remove and
> > replace the HT wires from the distributor, etc. to
> no
> > avail. Somehow, after a few minutes the motor
> > restarts. I've been to the dealer but they don't
> have
> > the proper equipment to analyze the motor anymore
> > (i'ts been discontinued since 1992).
> >
> > Of course I was suspecting the AFM (= vanagon
> > syndrome), but if it was that then turning the
> > ignition switch off and on again would have reset
> the
> > ECU and restarted the motor immediately AFAIK.
> >
> > I've also heard about bad chasis ground
> connections.
> > Still, the problem goes away without touching
> them.
> >
> > I still have to make sure there's a spark when the
> > problem occurs (every time, by the time I finished
> > playing with connectors, the motor would restart,
> so
> > I'm not sure). I've now got a spark sensor, will
> try
> > when problem re-occurs.
> >
> > Anyway, I need new ideas to debug this problem.
> Looks
> > like the ECU isn't getting some input it expects,
> thus
> > disabling spark generation.
> > Any other reasons except for the erratic AFM
> issue?
> > I would have loved to build the digitool mentioned
> > here, but I am afraid to open the ECU to add the
> > external flat-cable - a simple mistake might leave
> me
> > with no ECU at all...
> > Anyway, most digitool inputs are avaialable
> elsewere
> > in the wiring harness, so I'll go that route.
> >
> > So, ideas, anyone?
> >
> >
> > =====
> > Cheers, T-man.
> >
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
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> >
>
>
=====
Cheers, T-man.
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