DeMystifying Normal Sensor Readings A Guide for Professionals

On the downstream oxygen sensors you will want to see around 600mv-800mv without large fluctuations will indicate a good sensor. At normal driving you should see a steady voltage around 600-800mV most of the time. You'll see lower during fuel cut (idle deceleration) and ... When I often see a more or less constant reading on those tools, I expect the DME to be upset, yet it often isn't. I expect to see readings ... Depending on the normal range of a sensor, there are certain values that can indicate sensor or other failures like an open or short. (For ... Second, normal readings at sea level are 8-12". At higher altitudes, expect 14-18". Before you buy a new part, check for vacuum leaks. An ... My understanding is that when the car is running and up the normal operating temperature, the sensor generates a voltage and ideally this should be around 0.45 ... All the O2 voltages over 1 volt are off-scale high (rich). While in closed loop mode, both sensor 1 voltages should be oscillating from around . My MAP pressure is around 11 in/hg at idle. Not sure if that's right or not, but my car is running super lean. O2 sensors should cycle continuously between 0.2v to 0.8v and back to 0.2v about once per second. 2.67v isnt right. Could be a vacuum leak, ... ... sensor, at 2000 rpm SHRTFT was -5.5 LONGFTF was 12.5. At normal idle 700 rpm, SHRTFT was between 0.0 and 2.3, would often read 1.6. LONGFTF ...