993 non start

[ras62]

Crank sensor failure will only stop the fuel pump working, the car will still get a spark. The Control Unit is powered by the DME relay when turning on the ignition (connection 37 at the DME).
When cranking the engine the Control Unit receives a signal from the crank sensor, it then pulls in the second relay inside the DME that starts the fuel pump.

[gareth h]

Just an update on this one, car is now running, it was the crank sensor, although bizarrely when it was checked with an oscilloscope it showed a good signal, which even more bizarrely continued after the engine stopped cranking!
Anyway 5 hour train journey tomorrow to collect, dead excited it’s like new car day all over again

[PTT]

Thanks for sharing, enjoy your "new ride"

[Orangecurry]

gareth h said:

Just an update on this one, car is now running, it was the crank sensor, although bizarrely when it was checked with an oscilloscope it showed a good signal, which even more bizarrely continued after the engine stopped cranking!

Pope wins!

gareth h said:

Anyway 5 hour train journey tomorrow to collect, dead excited it’s like new car day all over again

Weird coincidence - I'm driving to '5 miles away from Ray West' tomorrow, unfortunately not in the 993. I can pop by and warm it up for you if you like?

[gareth h]

Orangecurry said:

Weird coincidence - I'm driving to '5 miles away from Ray West' tomorrow, unfortunately not in the 993. I can pop by and warm it up for you if you like?

You’re a gent

[gareth h]

gareth h said:

Orangecurry said:

Weird coincidence - I'm driving to '5 miles away from Ray West' tomorrow, unfortunately not in the 993. I can pop by and warm it up for you if you like?

You’re a gent

And thanks for putting me in contact with “the pope”

[Pope]

Glad it's sorted!