Hi folks!
I hope you're all doing well. I'm currently facing a problem with my beloved 1992 Mini Rover 1.3 SPI during the vehicle inspection regarding emissions, and I'm in need of some assistance and advice.
The issue revolves around the lambda values, which consistently remain at 1070mV according to the readings from the Rover MEMS application. However, what's even more peculiar is that when I turn off the engine, I observe the values rapidly dropping to around 200mV and then gradually increasing back up to 1070mV. It's almost like a capacitor charging.
Up to this point, I have taken several steps to address the problem. I have sealed all exhaust leaks, replaced the catalytic converter, and purchased a new Bosch lambda sensor. Despite these efforts, I'm still unable to pass the emissions test.
I'm reaching out to this knowledgeable community for any additional suggestions or troubleshooting steps I could take to resolve this persistent issue. Have any of you encountered a similar situation with your Mini Rover or have insights into what might be causing this strange behavior in the lambda values?
Your help would be greatly appreciated. I'm eager to find a solution and successfully pass the emissions test.
(I have some graphs from the application that would be quite helpful in understanding the situation I'm describing. Unfortunately, due to forum regulations, I'm unable to upload photos.)
Thank you all in advance for your support and suggestions
