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Mike Noc · 19th March 2022, 08:44

If the car runs fine once started it will be the cam sensor, as the ECM only references it at each start up and then forgets all about it until the next start up.
The crank sensor is constantly used when the engine is running by the ECM to time the injector firing.

19th March 2022, 08:44	#5
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,550 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	If the car runs fine once started it will be the cam sensor, as the ECM only references it at each start up and then forgets all about it until the next start up. The crank sensor is constantly used when the engine is running by the ECM to time the injector firing.