When the air/fuel ratio is expressed as lambda, a lambda number ...

[Alygatorr01285]

Question 1

When testing an oxygen sensor using a digital storage oscilloscope (DSO), how quickly should the voltage change when either propane is added to the intake stream or when a vacuum leak is created?
◦ 1-3 seconds
◦ Less than 100 ms
◦ 100-200 ms
◦ 450-550 ms

Question 2

When the air/fuel ratio is expressed as lambda, a lambda number of less than 1 indicates a ________ exhaust.
◦ Rich
◦ Lean
◦ Excessively cold
◦ Excessively hot

[heyhey123]

Answer 1

Less than 100 ms

Answer 2

Rich

[Alygatorr01285]

Thanks for the timely response, appreciate it

[coreycathey]

Gracias!