Manual

68
Hot Min Position
Exactly the same as for when the en gine is cold, excep t the value is used for when the
engine is hot, that is the temperature is above the Cold Temperature Limit.
Cold Opening position (%)
This is the op ening p osition as a p ercentage of where the stepp er motor will return to
when it is about to attempt to gain control of the engine. When you hit the throttle the
engine will accelerate and when it starts to decelerate again, there will come a point
during the deceleration when the Idle Control should attempt to regain control of the
engine and brin g it to the target idle RPM . The value y ou set here will result in the
stepper motor assuming a certain position, say 40% out. It will wait here until the
decelerating en gin e comes within ran ge and it feels it can take over control of the
engine and bring it back to idle. It will then assume control of the engine with the
valve open at 40%. This may be too high which will result in the engine momentarily
holding at the RPM produced by the valve at 40% opening. This means that it will
take a longer period of time to move the engine back down to target idle.
On the other hand, 40% may be too low and when the engine is decelerating, the Idle
Control will try to regain control at a point where the valve is go in g to cause the
engine to go very close to stalling. The secret is to start with a large value and reduce
it until it takes a normal amount of time for the idle control to regain control of the
decelerating en gin e and brin g it back to target id le. A normal amount of time is a hazy
description but it is somewhere in the vicinity of not too small so as to go close to
stalling the en gine and not too large as to take many seconds to return to target idle.
Hot Opening Position (%)
Exactly the same as for when the en gine is cold, excep t the value is used for when the
engine is hot, that is the temperature is above the Cold Temperature Limit.