Mo is still lurching.

madeupname · 29th October 2021, 17:35

Hi everyone. This has been an ongoing problem since 2019.
Trikey suggested removing the cam position sensor, cleaning it and putting it back.
This worked ok for a few miles but then the usual problem re-occurred.
I had already bought a new one from DMGRS, so I put that in and again it worked ok for a few miles then the problem came back.
So, I went online and looked up "why does my car rev itself?" and the results pointed to a problem with the idle air flow. I think this is what replaced the carburetor
Three things might be causing it.
It is either a hole or split in the rubber air hose.
The regulator valve sticking.
Or the sensor is on its way out.
Because it's an intermittent fault, my guess is a sticking valve.
Am I right in thinking the valve is beyond the sensor inside the engine housing?
If it is I will need someone to come round with an idea of what they are doing, and a torque wrench capable of 0 to 10nm.

Advice needed please

Thank you.

29th October 2021, 17:35	#1
madeupname Posted a thing or two Rover 75 Connie Mk2 1.8 (Mo) Join Date: Feb 2017 Location: Sheffield Posts: 1,531 Thanks: 875 Thanked 335 Times in 289 Posts	Mo is still lurching. Hi everyone. This has been an ongoing problem since 2019. Trikey suggested removing the cam position sensor, cleaning it and putting it back. This worked ok for a few miles but then the usual problem re-occurred. I had already bought a new one from DMGRS, so I put that in and again it worked ok for a few miles then the problem came back. So, I went online and looked up "why does my car rev itself?" and the results pointed to a problem with the idle air flow. I think this is what replaced the carburetor Three things might be causing it. It is either a hole or split in the rubber air hose. The regulator valve sticking. Or the sensor is on its way out. Because it's an intermittent fault, my guess is a sticking valve. Am I right in thinking the valve is beyond the sensor inside the engine housing? If it is I will need someone to come round with an idea of what they are doing, and a torque wrench capable of 0 to 10nm. Advice needed please Thank you. __________________ Mo was born Tuesday, 22nd June 2004 @ 08:32:41 This vehicle was the 99,307th 75 to run off the production line, out of 112,381 This vehicle was the 5,377th 75 1.8 Connoisseur to be made out of 6,033 This vehicle was the 783rd 75 in Firefrost Red (code: CEV) to be made out of 2,089 Firefrost Red 75s