Date:         Tue, 31 Dec 2002 22:00:19 -0500
Reply-To:     Hans Brouwer <h.brouwer@SYMPATICO.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Hans Brouwer <h.brouwer@SYMPATICO.CA>
Subject:      Re: Intermittent miss on one cylinder
Comments: To: Tom Miller <tmiller@VCMAILS.COM>
Content-Type: text/plain; charset="iso-8859-1"

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