Fuel pump woes

[Jay Kempf]

The relay is powered only when the computer let's the car run. The computer has to know the car is either trying to start or running to allow the fuel to flow. The computer can only know if the engine is running if it sees a signal from the crank position sensor. So if either the computer is dead on that channel, the crank position sensor is dead or intermittent or the wiring from the crank position sensor to the computer or to the relay is out you won't get any power to the relay.



Regards,

jfk

802 272 5868
jkempf at madriver.com

2. More fuel pump woes (Robert Bade) 3. Re: Convert/retrofit to R134a or 
stay R12? (SAJanesick - Bellsouth) ------------------------------ 
Message: 2 Date: Tue, 18 Jun 2013 17:11:47 -0400 (EDT) From: Robert Bade 
<rbade12 at aol.com> To: 200q20v at audifans.com Subject: More fuel pump woes 
Message-ID: <8D03A7F93E2BC51-11A0-274C5 at webmail-vm008.sysops.aol.com> 
Content-Type: text/plain; charset="us-ascii" Short version of where I 
am. Replaced the steel fuel lines, didn't know the age of the fuel pump 
so replaced it [it was original], replaced the fuel filter. I did 
nothing electrical other than the new connector to the fuel pump. My 
problem, I get no power to the fuel pump. I jumpered power to slot 52 of 
the fuel pump relay mount [#10] and get no power back at the fuel pump 
harness. It gets odd now, I checked continuity of the wires from fuel 
relay mount to the fuel pump harness and both power and ground are fine. 
It makes no sense! Am I missing something obvious? Fuses are good, 
battery is good. The Audi gods have been testing me lately, seriously 
pushing me. Bob 200q20v 170k ------------------------------ Message: 3 
Date: Wed, 19 Jun 2013 09:40:50