Date registered: Feb 2011
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2005 C180 K Lambda signal help
Got a 2005 c180K running poorly and over fuelling.
I scoped the pre cat lambda sensor (a broadband sensor) - car fully warm and at idle.
The broadband sensor does not seem to run in closed loop - i.e. does not start switching and outputting an oscillating signal as per normal lambda response.
Anyone know what the deal is here? I should expect to see a switching waveform, albeit not between 0 and 1V right?
Any info here would be great.
PS - Does anyone know where can get reference figures for stuff like 'burn time' and 'injector pulse duration' for various vehicles.