It is so easy and so effective to hot wire the fuel pump with a nice size
wire from a solid voltage source....and if it doesn't run when you connect
it to 'good power' that way, you whack it with a hammer or your hand or
something.....
It the ground is good, and you know there is good power to it, and banging
on it doesn't make it at least try to run a little, it is dead.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Dennis Haynes
Sent: Saturday, October 27, 2007 10:25 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: voltage needed to run an '88 fuel pump?

Your pump is seized. A seized or shorted pump will draw excessive current
causing the voltage drop. If it is OK 9 volts will get it turning.
Remember there is no fuse in this circuit.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Lee Kouns
Sent: Sunday, October 28, 2007 12:34 AM
To: vanagon@GERRY.VANAGON.COM
Subject: voltage needed to run an '88 fuel pump?

Well, I checked the voltage at my silent fuel pump today. When the
ignition was first turned on, I got a maximum reading of 9 volts for a
second or two, but still no sounds from the pump.  When I tried starting
the engine, the voltage went back up to about 9 volts and stayed there.
What's the minimum voltage the fuel pump needs to operate?  Should a
battery in good condition supply more voltage at the pump than what I
got?   Is it time to replace the battery and see what happens, or is
there another test I should try first?
   Any comments are always appreciated.
Lee Kouns
Reno, NV