Date: Sat, 12 Apr 2008 21:11:43 -0700
Reply-To: neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil N <musomuso@GMAIL.COM>
Subject: Re: Fuel pump on for one second normal w/key to "ign." position?
In-Reply-To: <BAY125-DAV9BFAF7BBD067A6C392C72A0E90@phx.gbl>
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Thanks Dennis.
I had to wonder, after posting, if in fact something was hinky with
the old air cooled fuel pump wiring. I got in the habit of letting the
pump run a few seconds to prime things, then crank it. Hearing it spin
like that seemed normal to me.
Kind of a blessing, in a way, doing this conversion. I'm sorting out a
problem that could have provided some negative results under the wrong
conditions.
Anyhow, I'll find out soon enough if my new wiring for this Jetta
engine install, is correct.
I hope to fire it up tomorrow!
Thanks,
Neil.
On Sat, Apr 12, 2008 at 7:41 PM, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> Something was wrong with your old set up. Fuel pump should only run while
> cranking or when the switch in the air flow meter was closed which
> requires the engine to be running to happen.
>
> On the water cooled engines the AFM switch was replaced with the need for
> the ignition to be pulsing. The short run when the ignition is first
> turned on is really from the ignition pulse. Crank the engine or get it
> started and as long as the distributor is turning the pump will be
> running.
>
> Dennis
>
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> neil N
> Sent: Saturday, April 12, 2008 10:16 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Fuel pump on for one second normal w/key to "ign." position?
>
> Hi all.
>
> So a good day was had on the conversion front. After I found that I'd
> left the battery connection off the starter (d-oh!), I connected that
> and got the engine to spin! But...... no familiar fuel pump sound like
> it used to do with the old engine. On the old setup, key turned to
> "ign. on" and "bzzzztt" continuously.
>
> On the new setup, at first there was no FP sound, but then I realized
> I had the ground signal from ECM going to the wrong pin. I corrected
> this. Now when I turn the key to ign. (15) position, the FP sounds
> like it spins for a second then stops.
>
> A really short quiet "bzzt".
>
> From what I've read, it seems that the fuel pump on a more modern
> vehicle (unlike my *former* air cooled Westy --- ;^) may, or may not,
> spin for a brief time before actually cranking the engine. When
> cranking, the pump will pump and continue to do so if the engine runs.
>
> Question:
>
> is it "normal" for the FP to run for only 1 second with key in "ign."
> (15) position?
>
> I'm so used to hearing that continuous FP sound on my old setup.
>
> Apologies, as I know this in the archives, I'm just trying to nail
> down bugs before I fire it up. An informed list "yay" or "nay" would
> help!
>
> Thanks,
>
> Neil.
>
>
>
> --
> Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"
>
> http://web.mac.com/tubaneil
> http://tubaneil.googlepages.com/
>
>
--
Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"
http://web.mac.com/tubaneil
http://tubaneil.googlepages.com/
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