I am just diving back into cars after many years.
Trying to fill in gaps of conceptual knowledge.
I understand that these 2 sensors are part of a fuel injection system.
It is no longer purely mechanical with lifters, rocker arms, valves, etc.
What is the difference between them?
I have read they both are used to determine when to fire the spark plug.
(Something the timing belt used to do?)
Can you share the basic concepts behind these 2 sensor’s roles?