01-03-2018, 02:45 PM
Second question.
Since the tach signal is used by the tachometer as well as by the ECU, do you think the ECU also uses an internal circuit to convert the tach signal into an actual rpm value, or a digital value such as ON/OFF (yes the engine is running vs. no its not).
I'm trying to determine if this vintage of Kick ECU is using the tach signal only as a fuel injection cut parameter to stop all fuel injection if the engine is not running, and is not cranking.
Since the tach signal is used by the tachometer as well as by the ECU, do you think the ECU also uses an internal circuit to convert the tach signal into an actual rpm value, or a digital value such as ON/OFF (yes the engine is running vs. no its not).
I'm trying to determine if this vintage of Kick ECU is using the tach signal only as a fuel injection cut parameter to stop all fuel injection if the engine is not running, and is not cranking.