1 reply to this topic

[bradderz]

1991 Mini Cooper 1.3 spi.

I was testing to see if the lambda sensor was working by disconnecting it, it did not do anything when unplugged, I tested it when it was warm and cold and both times didn't make a difference, could this broken and could this be causing my car to loose power when cold and also spluttering when cold?

Thanks

[xrocketengineer]

1991 Mini Cooper 1.3 spi.

I was testing to see if the lambda sensor was working by disconnecting it, it did not do anything when unplugged, I tested it when it was warm and cold and both times didn't make a difference, could this broken and could this be causing my car to loose power when cold and also spluttering when cold?

Thanks

Hi, my (non Mini) experience with disconnecting the Lambda sensor is that if the problem goes away when disconnected, the sensor is bad. The ECU will adjust the mixture based on other sensors like MAP, TPS, coolant temp, etc. in the absence of the Lambda sensor and the engine should run perfectly. However, the Lambda sensor working properly will further refine the mixture settings for the Cat to do its job properly reducing emissions.
So, your sensor should be OK. Your problem is elsewhere.

Ivan