« on: January 14, 2017, 07:54:05 PM »
So guy's, I have a idle control issue with my microtech ECU where it is essentially a bit basic and does not have some quite key functions. So I want to try and plug something in to create a work around for the main issue I currently have. That is poor idle due to voltage drop when any electrical loads are applied such as fans.
The work around I want is this. I want a wire something in off the back of the alternator or any other 12V wire I guess that reads the voltage which under normal running will be around 14.2 volts with a good battery. if the voltage temporarily drops down to say 13.8V when a load is switched on I then want this to flip a switch which will allow a 12v supply to be sent to an input on the ECU. Then when the voltage picks back up the switch will flip back and close off the 12v source to the ECU. I hope that makes sense. I think this should also only happen when at idle so I guess that means wiring a microswitch onto the throttle pedal or throttle body that is on/off when the throttle is closed.
Can anyone advise if there is any off the shelf item that will do this or if I need to make something and if so what components am I looking at?
One other thing is ideally I want to be able to adjust the voltage that the switch flips at in order to fine tune the point at which this needs to happen.
Thanks for any help.