[s-cars] G28 engine speed sensor

[Ronald Whiton]

Thanks to all for your replies,

Here is some new found input.  After conducting some recommended
diagnostics I have found that fuel is reaching the rail, but could not
come up with any spark.

I guess this would lead to lots of wire testing.   Ugh, not my forte'.

Also the plugs are new and codes have been pulled after cranking for
5+ seconds with ignition left in the on position.

So... what are the most common causes of no spark?

All thoughts appreciated,

Ron Whiton

On 5/10/06, tufty <tuftywxm at hotmail.com> wrote:
> Okay Ron the CPS code will always be there if the car has not been
> turned over for about 5 seconds and then not switched off. If you are
> just switching the ignition on and then checking for fault codes you
> will have the CPS code......As you know you need basically 3 things to
> start an engine fuel, spark and compression...have you loosened a fuel
> line to make sure you have flow and pressure? Have you pulled the coils
> and checked for spark? If these 2 are present I would bet money that you
> have something as simple as fouled plugs....the F5DPOR plugs do not like
> to get wet at all and if you had something as simple as a weak battery
> it would cause this....
>
>
> Dave Jones
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Ronald Whiton
> Sent: Tuesday, May 09, 2006 7:04 PM
> To: chris chambers; s-car-list at audifans.com
> Subject: Re: [s-cars] G28 engine speed sensor
>
> Chris and list,
>
> The CPS is new.  When no-start began I got CPS and G28 codes.  I
> replaced the CPS and still no start.  Swapped ECUs with John B. at
> Woodlawn in Philly and his car started fine.
>
> Ron Whiton
>
> On 5/9/06, chris chambers <fastscirocco_2000 at yahoo.com> wrote:
> > Ron,
> >
> > Sounds like your CPS sensor has failed,
> > When the CPS sensor goes bad you can't start the car and
> > it won't flash a code.
> >
> > HTH
> > Chris
> >
> >
> > --- Ronald Whiton <dooksniffer at gmail.com> wrote:
> >
> > > Good eve all,
> > >
> > > Still not starting and this is the only code I am getting.
> > >
> > > 4A0 907 551 C
> > >
> > > 00513 Engine speed sensor (G28)
> > > No Signal
> > >
> > > I have read many posts in the archives mentioning that this code
> > > always presents itself when the engine will not fire (for any
> > > reason).
> > >   I can't recall ever reading about it here, but has anyone had this
> > > bugger fail causing a no-start?
> > >
> > > CPS=>NEW (no more code for that)
> > > ECU=>swapped and works fine
> > > New plugs and 1.8 conversion (didn't start before conversion either)
> > >
> > > thoughts?
> > >
> > > Ron Whiton
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> >
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