[928uk] It won’t start

[Jonathan Rackowe]

Hi, if I missed this check in the messages then apologies, but shouldn't
you also check that all of the CPS connections are open circuit (not
shorted) to chassis/engine block ground; similar to the checks you would do
on a wheel speed sensor?

Best regards,
Jonathan

 928 GT 1991 Amethyst Metallic


On Tue, 11 Jan 2022 at 17:09, Paul R Smith via 928uk <928uk at lists.928.org.uk>
wrote:

> Those readings, plus the condition of the plug look good, the condition
> of the plug looks like it has already been replaced.
>
> You could see if you are getting any voltage from the pins that recorded
> a resistance while the engine is being turned over, but the signal would
> be less than 5v AC and your meter only goes as low as 200vAC so it
> probably wouldn't register.
>
> For the time being I think you can assume that the CPS is okay.
>
> Have you checked/changed the ignition ecu relay yet?  (Relay VIII)
>
> It might be a good idea to check that all of the battery connections are
> tight, including the smaller red wires as one of them feeds the
> ignition, then check that the ignition ecu connector is getting power on
> pin 25 when the ignition is on.
>
> Smiffy
>
>
> On 11/01/2022 14:02, 21Gmail wrote:
> > Hmm, I’ve repeated what I did before but the results are different,
> > dunno what I did wrong this morning. As you say, I’m getting O/C for
> > two of the pairs and 0.93 - 0.95 (at 20k setting) for the other.
> >>>>
> >>>>
> >>>>
> >>>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>
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