Here's a set of reading from a car I worked on today:

NOX....CO....HC....CO2....O2

27_____0.0___28____11.4___0.7___IDLE

69_____0.0___13____11.5___0.1___2500 in neutral

33_____0.0___16____11.5___0.1___1200 in drive

The machine is an OTC 5 gas, recentl... Login to read more.