Date:         Sun, 12 Jun 2011 16:51:09 -0700
Reply-To:     Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject:      Re: 84 Westy Fuel Pump Problem
Comments: To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=original

next time I'm working on one, I disconnect the distributor, and see if ecu
still runs the fuel pump for a few seconds when you turn the key on.
 I suspect it will.
it's to pre-pressuring the fuel rail, it's designed in on purpose.

almost all EFI cars pre-run their fuel pump ..
either by the wbxr method ..
or during starter cranking, energized by the 'start' signal from the ign
switch ( not vanagons though ) .


----- Original Message -----
From: "Dennis Haynes" <d23haynes57@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, June 11, 2011 10:07 PM
Subject: Re: 84 Westy Fuel Pump Problem


> The fuel pump running for a short time after the ignition is turned is not
> a
> design feature. It is a glitch. In order for the pump to run the ECU needs
> to see the pulses from the distributor turning. Depending on distributor
> position turning the key on will often give a pulse (accompanied by a
> spark), and this will cause the pump to run briefly. If the pump runs
> while
> the engine is turning then all is good. No reason to go further.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Nirav V. Patel [USA]
> Sent: Saturday, June 11, 2011 9:03 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: 84 Westy Fuel Pump Problem
>
> I'm a newbie with VW repair and maintenance, but getting better.
> Would love any and all thoughts on a problem I have with my fuel pump.
>
> I can't seem to get my fuel pump to do the one sec prime when the key
> is in the run position.  Fuel pump runs when jumped with 12v.   I
> tested my wires (Relay to Fuel Pump) with a multimeter, and the output
> from the relay box to the fuel pump is reading .10 on the multimeter
> for the 1sec duration when the key is on the run position.  When the
> engine starts I'm getting 12v. I've swapped out my relays and tested
> another ECU.  The wiring seems intact.
>
> Today I removed the steering column cover to check the key lock
> mechanism (ignition switch?). I was told that this mechanism is
> signaling to the ECU. When I pulled out the connector behind the key
> lock, this is what I saw: http://goo.gl/bgLcy
>
> Is it possible to jump these wires in order to test to see if the key
> lock mechanism is broken?  If it is broken, perhaps it's not signaling
> correctly to the ECU. But then again, maybe I'm completely off base
> here. Please help.  I'm at a loss.
>
> Greetings from Austin, Texas.
>
> +nirav