Rev Limiters (was RE: Knock Sensor Q)

[indiana_red@hotmail.com (Ken Bates)]

This is exactly MY problem and why I started this thread the other day.  I
am not getting a ground on the switching side of my fuel pump realy and
suspect my Knock Box is not "completing" this circuit.
I am about to do just exactly what Jonas is saying and jumpering a seperate
ground to the FPR.
I ma followingthis closely.  I appreciate all the input.
Ken
'79 Scirocco 16v project "McFly"
'86 16v (parts car)
VORTEX:  "Indiana Red"

----- Original Message -----
From: "Jonas K." <jkarlsso@metabolex.com>
To: "Cory Langford" <cory.langford@icbc.com>; "scirocco list"
<scirocco-l@scirocco.org>
Sent: Thursday, May 23, 2002 11:59 AM
Subject: Re: Rev Limiters (was RE: Knock Sensor Q)


> On 5/23/02 10:36 AM, "Cory Langford" <cory.langford@icbc.com> wrote:
>
> > If the Knock Box tells the Relay when to shut down the fuel pump, I
> > would suspect that would be done via a voltage/no voltage situation to a
> > specific pin from the box to the relay.
> >
> > So if that wire was cut (the connection between the relay and the knock
> > box) would not the rev. limiter be removed?
>
> From my stydy of the system a couple of years back, (i.e. hazy memory) the
> Knock box actually provides the ground that keeps the relay going. When
the
> rev limit is exceeded the ground is removed and fuel pump shuts off.
>
> Cutting the wire would render the FPR permanently off. The worst kind of
rev
> limiter there is. :-)
>
> You might be able to short the wire to ground permanently, for a crude
> "fix", or with some creativity one could probably retrofit an earlier FPR
> without too much difficulty. The rev limiter should be de-activated.
>
> Let me know if it works.
>
> Jonas
>
>
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