My first breakdown

Shonkie · 19th May 2020, 12:49

Hi everyone.

Disaster today, I was heading to a friend who had a breakdown with his work van and my car came to a halt. I have power and the engine turns over but will not start. I did think at first it could be fuel starvation but I have recently replaced the secondary upper fuel pump and the filter. I have half a tank of feul so that's ok.
I asked a friend who also has a 75 and he has suggested it might be the cam sensor or maybe the fuel pressure sensor.

Any advice would be greatly received.

trikey · 19th May 2020, 14:59

Have an injector leakback test done, this can cause the car to stop running.

Lee T · 19th May 2020, 15:51

If it died whilst running it won't be the cam sensor, could be the crank sensor. Leakback test as suggested is easy to do. Disconnect fuel return pipe and T pieces from all injectors and place pipe in a 2 ltr bottle, unplug elec connectors from injectors and crank the engine for 5 seconds, any injector with more than a slight dribble of fuel can be considered out of spec. That's how I diagnosed mine.

marinabrian · 20th May 2020, 05:00

Don't discount items simply as they have been recently replaced, what type of fuel pump was fitted?

CMP sensor is only used to reference the injection cycle during cranking, and won't cause the car to cut out, the CKP sensor, you should see the tachometer needle twitching while cranking, however it could be all manner of things.

Why was the underbonnet pump changed, was it definitely defective, or otherwise perhaps.

Brian

19th May 2020, 12:49	#1
Shonkie Regular poster Rover 75 Saloon Join Date: Oct 2019 Location: Plymouth Posts: 74 Thanks: 45 Thanked 13 Times in 10 Posts	My first breakdown Hi everyone. Disaster today, I was heading to a friend who had a breakdown with his work van and my car came to a halt. I have power and the engine turns over but will not start. I did think at first it could be fuel starvation but I have recently replaced the secondary upper fuel pump and the filter. I have half a tank of feul so that's ok. I asked a friend who also has a 75 and he has suggested it might be the cam sensor or maybe the fuel pressure sensor. Any advice would be greatly received.

19th May 2020, 14:59	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,772 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Have an injector leakback test done, this can cause the car to stop running. __________________ Lest we forget..

19th May 2020, 15:51	#3
Lee T Gets stuck in MG ZT Join Date: Jul 2014 Location: Liverpool Posts: 853 Thanks: 180 Thanked 248 Times in 189 Posts	If it died whilst running it won't be the cam sensor, could be the crank sensor. Leakback test as suggested is easy to do. Disconnect fuel return pipe and T pieces from all injectors and place pipe in a 2 ltr bottle, unplug elec connectors from injectors and crank the engine for 5 seconds, any injector with more than a slight dribble of fuel can be considered out of spec. That's how I diagnosed mine. __________________ [SIGPIC][/SIGPIC]

20th May 2020, 05:00	#4
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	Don't discount items simply as they have been recently replaced, what type of fuel pump was fitted? CMP sensor is only used to reference the injection cycle during cranking, and won't cause the car to cut out, the CKP sensor, you should see the tachometer needle twitching while cranking, however it could be all manner of things. Why was the underbonnet pump changed, was it definitely defective, or otherwise perhaps. Brian