Hi there, I have got to the point of the build MS2 V3 where I need to decide if I will be using an IAC or PWM solenoid valve. I think with the number
of times I will use the car versus the benefit of installing either solenoid suggests I don't install either! i will just use a bit of throttle
to get the engine warm. Can I just miss out installing all components for the IAC and PWM on the megasquirt board? If not, then which should I
install?
Thanks in advance.
To be honest most engines will run fine without any idle control valve. Unless you have AC that will be putting a variable load on the engine. There
is a setting in MS2 called cold advance that will bump up the ignition timing when the engine is cold which will keep the need for feathering the
throttle.
Dave
Nowt on mine, the cold enrichments sort the fuelling I just feather the throttle for a minute until it idles on its own.
You can miss them out, but there is a link wire which connects to the daughter board pins which is a 12v supply to serve the IAC. It is reccomened
this is installed as it helps to keep the chip cool.
quote:
Originally posted by big-vee-twin
You can miss them out, but there is a link wire which connects to the daughter board pins which is a 12v supply to serve the IAC. It is reccomened this is installed as it helps to keep the chip cool.
That's it I didn't fit it at first but read somewhere it was needed to stop the chip overheating so added it before I ran the engine.
You can just populate the board and turn the feature off in the software, that's what I did. Pwm idle control seems to be better than stepper from my experience.
quote:
Originally posted by ashg
You can just populate the board and turn the feature off in the software, that's what I did. Pwm idle control seems to be better than stepper from my experience.