Date: Fri, 9 Apr 2004 19:20:07 -0400
Reply-To: Tom Miller <tmiller@VCMAILS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Tom Miller <tmiller@VCMAILS.COM>
Subject: Re: Intermittent miss on one cylinder
Content-Type: text/plain; charset="iso-8859-1"
I found a 5 ohm resistance on the common lead on the right rear cylinder
injector at the plug. Does anyone have an extra plug with 6-12" of lead on
it that I can use to splice into my harness? Thanks to all who offered lots
of suggestions. Hans hit it on the nose.
Tom Miller
----- Original Message -----
From: "Hans Brouwer" <h.brouwer@SYMPATICO.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, December 31, 2002 11:00 PM
Subject: Re: Intermittent miss on one cylinder
> Could be an injector wiring problem.
>
> Check the continuity of the injector plug wire.
>
> This is what I did and solved a similar problem:
>
> 1. Disconnect the battery.
> 2. Disconnect the plug at the ECU.
> 3. Check wih Bentley wiring diagram what the positive and negative
injector
> are on the big plug that connects to the ECU.
> 4. Take the enjector off.
> 5. Check the continituity.
> 6. Wiggle the wiring harness above the theromostat housing.
> 7. Continuity yes/no
>
> The negative wires from each of the injectors are crimped together to one.
> This connection is in the main wiring harness. If water gets in there it
> will corrode the wiring hwere it is crimped together. The positive wires
> come together as well around the same spot.
>
> Where the wires are crimped, the wires corroded and were not making good
> contact. In matter of fact when I touched them they fell right off.
>
> You can also use a noid?? or little test light that plugs in the injector
> connector, start engine and see if it flickers.
>
> Hans Brouwer
>
> Cumberland, Ontario
>
> 86 Westfalia
> 69 Bus
> 92 Cabriolet
>
>
> ----- Original Message -----
> From: "Tom Miller" <tmiller@VCMAILS.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Saturday, February 28, 2004 8:56 PM
> Subject: Intermittent miss on one cylinder
>
>
> > OK. I have been trying to solve this one myself and I'm getting no
where.
> > I have an 89 Westy with a rebuilt motor. There are nearly 15K miles on
> it.
> > The right rear cylinder is miss firing at times. It generally works
until
> > the engine warms up a bit and then cuts in and out at will. I swapped
the
> > ECU with no change. I replaced the plugs and distributor cap with no
> > change. The wires are new at 10K miles. The spark seems to be very
> strong.
> > I swapped injector connectors but the problem remains with the right
rear
> > cylinder. I checked compression and it is very good. I was about to
> check
> > the head cap nuts to see if they are torqued properly. I am thinking
> maybe
> > there is a small coolant leak into the cylinder that "puts out the fire"
> but
> > there are no clouds of steam coming out of the tail pipe.
> >
> > Any ideas what more I should do?
> >
> > Thanks much.
> > Tom Miller
>
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