C18NZ (Auto) - Erratic rev counter
Posted: Thu Oct 12, 2023 12:56 pm
Well, just over one month since my C18NZ auto passed its MOT and got back on the road
I've done almost 600 miles since then "running in" and getting to know the car again and a couple of minor issues needed addressed but it's now driving very well.
One issue that I did have was that the rev counter would intermittently read 1-1.5K revs too high while on a drive, while the engine/gearbox noise definitely didn't change at the same time. Normally I disconnect my battery when I put my old cars back in the garage (I also have a 1300 GLS Viva) and I'm now wondering if this might be the cause of this behaviour in the Cav?
For the last week or so I haven't disconnected the battery in the Cav and the rev counter now reads correctly 100% of the time whether on a short or longer run.
Could it be that the engine management needs to "recalibrate" with respect to the rev counter after a battery disconnection?
I'd appreciate your thoughts
Cheers
John
I've done almost 600 miles since then "running in" and getting to know the car again and a couple of minor issues needed addressed but it's now driving very well.
One issue that I did have was that the rev counter would intermittently read 1-1.5K revs too high while on a drive, while the engine/gearbox noise definitely didn't change at the same time. Normally I disconnect my battery when I put my old cars back in the garage (I also have a 1300 GLS Viva) and I'm now wondering if this might be the cause of this behaviour in the Cav?
For the last week or so I haven't disconnected the battery in the Cav and the rev counter now reads correctly 100% of the time whether on a short or longer run.
Could it be that the engine management needs to "recalibrate" with respect to the rev counter after a battery disconnection?
I'd appreciate your thoughts
Cheers
John