Date: Wed, 16 Apr 2008 14:28:19 -0700
Reply-To: Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM>
Subject: Re: Jetta Power Supply relay questions (Vanagon conversion) PIC
of wiring diagram.
In-Reply-To: <c4e7c5f90804161414g2baada8et7796e602acac6b9@mail.gmail.com>
Content-Type: text/plain; charset="us-ascii"
If you are talking about a Remote Starter switch for initial cranking and
firing up - *imperative* to do it that way in my world, so you can be right
by the engine while it's cranking.
Doesn't matter too much if fp runs during cranking or not.
Often you can't hear the fp running in that phase due to starter noise.
As long as there is fuel pressure....and all the other stuff at the right
time, it should fire and run.
Fire that mutha up !
-----Original Message-----
From: neil N [mailto:musomuso@gmail.com]
Sent: Wednesday, April 16, 2008 2:14 PM
To: Scott Daniel - Shazam
Cc: vanagon@gerry.vanagon.com
Subject: Re: Jetta Power Supply relay questions (Vanagon conversion) PIC of
wiring diagram.
Hi Scott.
On Wed, Apr 16, 2008 at 1:21 PM, Scott Daniel - Shazam
<scottdaniel@turbovans.com> wrote:
> Here's what I'm wondering.
> Is the fuel pump energized by the ECU supplying ground to it, to energize
it
> ? ( like waterboxer vanagons have, and like subaru's have ) .
Yes. The ECU supplies grounds to fuel pump relay as well as other relays.
> If so, temporarily supply your own ground to make the fuel pump run,
> Then see if the engine starts.
>
> OR....just hot wire the fuel pump temporarily and see if the engine then
> runs.
> But as long as the ECU is supplying ground to energize the fp relay, the
> other contacts sure should not be hard to figure out or get right.
I hot wired the FP relay yesterday. I heard it run continuously, and
could hear fuel coming up through lines to fuel rail.
This makes me wonder if FP is running during cranking cycle.
> '3/86' and the '2' don't make sense to me.
> The J16 relay looks like a regular 4 contact relay to me, with nothing
> mysterious about it.
> Are you resisting moving to the next step ?
Yup! Regular "B flat" (very common key in music) relay, except that it
appears 30 is wired internally to provide + to one side of
electromagnet coil. Pretty sure only 3 connections needed.
Nope! :^)
Today, I'll be hot wiring FP while cranking to see if that's the issue.
I'll also be making up a push button (temp "on") for starter, so that
will help a lot with trouble shooting.
Thanks very much!
Neil.
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of
> neil N
> Sent: Wednesday, April 16, 2008 12:51 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Jetta Power Supply relay questions (Vanagon conversion) PIC of
> wiring diagram.
>
> Hi all.
>
> I still have a no start on my conversion, so am double checking the
> wiring to added relays for Jetta ABA OBD1 into my Vanagon.
>
> In this image from Bentley (Jetta):
>
>
http://tubaneil.googlepages.com/jettafinal1.jpg/jettafinal1-full;init:.jpg
>
> there are two connections " 3/86 " and " 2 " near relay, that I'm curious
> about.
>
> 2 appears to connect with "malfunction" light on dash.
>
> + from ignition switch (15) goes to 3/86, but 86A is negative from
> ECU. There is only an 86 on relay.
>
> I would think that they don't shard the connection!
>
> And..... it appears that 30 is supplying + to 85 of relay internally,
> so why would there be a need for "keyed" + to relay?? Relay should be
> "turned on" by negative from ECU.
>
> I'm confused.
>
> I guess the simple question is, as per the diagram, do 3/86 and 2
> actually connect to the relay?
>
> Thanks for any help!
>
> Neil.
>
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