Engine Some scope readings for you.

[CassieL]

These are scope readings I captured when my truck was cutting out and stalling.
I knew this felt like a tfi module so i scoped the pip output and the coil trigger output.
The green line is the pip, yellow line is coil trigger. You can see the trigger signal cutting out while the pip is steady.
The second picture you can see the pip dropping some pulses as the engine is stalling.
After a few more minutes the trigger stopped completely while the pip was normal.
The tfi module (remote mount) was only five months old and standard brand from O'Reilly's.

 

[General karthief]

That's great info IF you know what your looking at, square wave and spikes and sht involves math and science stuff, I slept through that class.

 

[limp]

That's great info IF you know what your looking at, square wave and spikes and sht involves math and science stuff, I slept through that class.

Too many bong hits for me to remember.....

 

[CassieL]

PIP signal is a square wave. Coil trigger is the coil charging a the firing line. Those aren't spikes it's the firing line.

 

[CassieL]

This one is a longer sample but it's a normal reading of a good running ignition.