Hi all, looking for some ideas on this problem.

RR has developed a fault where it will stall - completely cutting the engine (and power steering brakes etc!). It brings up the red restricted performance message but nothing else to give any clue what’s happening. Once stalled it will restart but cuts out after 2 seconds. If left for about 30 minutes it will restart and drive ok. It will restart if I connect my basic OBD reader and clear all codes.

Based on codes and their knowledge my local independent garage have changed the crank sensor and a MAF sensor. Unfortunately no change in the symptoms at all.

The stalling seems to happen after driving for about 40 minutes or equivalent e.g. a 25 min journey after an earlier (2hrs previously) 25ish minute journey. Shorter isolated journeys haven’t triggered this stalling (yet). This is making me think the problem is temperature related.

There’s no misfire or indication of an engine or other mechanical fault when the stalling happens.

Codes from my basic reader and the local garage haven’t given any clear indication of anything that would cause a stall.

I’m leaning towards it being an electrical / wiring / sensor fault mostly because the car seems able to be reset by simple code reading and trouble code deleting. But how to track it down?

Any ideas?? I have tried to search thoroughly and only found one very similar thread which was a crank sensor problem.

Thanks in advance, James

A few screenshots of codes that have been recorded through this process

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Throttle body sticking shut? Seen a few of them, and they don't log any codes for some reason...

Starts and runs for a few seconds, cuts out and won't restart, barely even a cough. Let it sit for 10 secs, and it does the same

Thanks smiley, that sounds very like the symptoms - especially not producing codes.

My garage told me they had the same ideas but investigated and couldn’t see anything obviously wrong (no gunk or wear in it).

With how much cost and inconvenience it’s been causing me I might just get the whole part replaced. I assume that’s going to be the fix?? Or could it be some weird ECU issue telling it to close??

Mikey not Smiley! Sorry, autocorrect got me