Author Question: The primary purpose of the fuel trim is to keep the air-fuel mixture as close to ________ as ... (Read 66 times)

jjjetplane · **on:** Jun 23, 2018

The primary purpose of the fuel trim is to keep the air-fuel mixture as close to ________ as possible.

A) One B) 14.7:1 C) Lambda D) Both B and C

Question 2

Technician A says that oxygen sensors can be tested using a test light or dwell meter, or a scan tool.
Technician B says that conditions can occur that cause the oxygen sensor to be fooled and give a false lean or false rich signal to the PCM. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician