Rovergauge

[Seandenyer]

Hi, just connected to Rovergauge as car running rough and have these results, can anyone tell me what they mean .

Thank you

[Seandenyer]

Better picture I hope

[TV8]

the trim (bottom left) is more than 100% on one bank of the engine. That means that the ecu is trying to change the settings (Either too rich or too lean) to bring the engine back to target air fuel ratio and it can not do that within the inbuilt adjustment. Have you reset the ECU? If yes, you need to understand if you have an ignition problem or something else. I cant see if the fault codes are lit up at all. If they are, they are self explanatory.

[bobfather]

Swap the lambda sensors over, if the fault switches to the other bank then it'll be a faulty lambda sensor. Just a process of elimination

[Seandenyer]

I haven't reset the ECU and the fault codes aren't lit up but I have just taken spark plug extenders off and engine is running a lot smoother now.

[Steve_D]

Another tool to use with RoverGauge is an infra red temperature gun. Pointing it at each exhaust port will show you which cylinder(s) is/are not playing the game.

Steve