RE: Re: Why my '81 16v won't start? (part 2)

[Jonas Karlsson <jkarlsso@metabolex.com>]

Dave Novak wrote:

>I am using the original Scirocco fuel pump, so I should stick to 
>the scirocco fuel pump relay, no?
>
makes no difference which FPR is used with which fuel pump, AFAIK. 

>
>I was led to believe no spark would occur if the fuel pump didn't 
>run.
>
>Since my coil isn't sparking correctly because of some bad 
>mystery ground, 
>wouldn't jumpering the fuel pump be useless?
>

The FPR does not actually cause the coil to spark. The FPR senses the 
(Ground) pulses from the ICU and use these to keep the relay closed. On 
a fully functional, normal car, the car will get spark even if the FPR 
is removed. 

Your problem is that your coil is permanently grounded at terminal 1. 
This prevents the ground pulses from the ICU from generating a spark. It 
is possible that the short circuit originates within the FPR and by 
removing it, terminal 1 would no longer be grounded. 

HTH

Jonas
85 Scirocco 2.0


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