I have an rpm controlled switch that triggers the ground side of a 30 amp relay, which in turn controls a solenoid.
My problem is that when I get into a higher gear, the rpms oscillate a little while accelerating and this in turn oscillates the relay and the solenoid which triggers a check engine light.
The RPM switch is store bought, the solenoid is OEM, so the only thing I can think of doing is adding a little hysteresis to the rpm switch output (ground signal) before it connects to the relay's ground coil trigger.
How can I do this? Do I need a circuit or will a simple capacitor do?
Here is a very crudely drawn diagram
My problem is that when I get into a higher gear, the rpms oscillate a little while accelerating and this in turn oscillates the relay and the solenoid which triggers a check engine light.
The RPM switch is store bought, the solenoid is OEM, so the only thing I can think of doing is adding a little hysteresis to the rpm switch output (ground signal) before it connects to the relay's ground coil trigger.
How can I do this? Do I need a circuit or will a simple capacitor do?
Here is a very crudely drawn diagram