I stand by my first post,
"graphing" is a diagnostic function where the output signal from the CTS can be viewed as a progressive line on the screen.
It ought to be a good smooth progression changing as the coolant heats up.
Now it's quite possible for the signal to "loose" or glitch as the temperature changes.
I've seen complete signal drop out then recover as heated.
The effect of this would be like pulling on the choke nob if your old enough to remember chokes!!
Anyway non invasive test that if nothing else confirms/denies correct air fuel ratio through the temperature range.
Posted on Saturday 7th of April 2018Don't understand this? Ask a question