Key out of ignition but engine still running!

[belfry]

WTF?

I just turned off my 997 (or I thought that I had) and put the key into my coat pocket, however, the engine was still running.

I put the key back in to the ignition and turned it to position 1 then turned it back to the left and the engine stopped. What is happening?

[edc]

I'd suggest faulty ignition switch or barrel. Quite common for these to break down on 986/996 but I'm not sure the 997 uses the same part.

[sidsideways]

or could be very hot engine in which case needs urgent attention

[belfry]

sidsideways said:

or could be very hot engine in which case needs urgent attention

I just moved it from one parking space to another one nearby

[Younez]

very unlucky with cars reminds me of citychap.

would get that seen to asap!

[jhfozzy]

Could be lots of things, but I've had ignition barrels breaking down, alternators shorting internally, faulty relays.

If it's intermittent it can be dammed hard to diagnose.

[996TT02]

sidsideways said:

or could be very hot engine in which case needs urgent attention

Only if 997s now come fitted with carbs, or at best, mechanical fuel injection

[sidsideways]

Sorry not in to modern electronic controls but can see the probability as they prohibit everything with sensors everywhere. I'm just an old dinosaur.

[996TT02]

sidsideways said:

Sorry not in to modern electronic controls but can see the probability as they prohibit everything with sensors everywhere. I'm just an old dinosaur.

Would have been an instinctive retort from me, too, a few years back

For the uninitiated, the running-on could happen in an old be-carbed motor if the plugs and/or combustion chamber / carbon deposits get so hot due to a cooling problem that even with the ignition off i.e. no spark, there is enough heat in there to cause a petrol engine to keep on igniting the incoming fuel air mixture, also with the aid of the heat of compression. I.e. the petrol engine goes diesel.

With moderns this is not possible as the injectors stop firing fuel when the ignition is turned off.

A little history lesson about the time when cars actually smelt of petrol and the only two things that could go wrong with an engine were no fuel or no spark

[AndrewMontgomery]

This happens to my turbo periodically. On every occasion it happens I discover that the key has come out a little from the fully-pushed-in position. If you push it in first then turn it off it goes off. Or replace the key and turn it off. A bit disconcerting but nothing more than that.