Idle question (yes..another one..)

[teme]

So i have now new ics, and it works like a dream.

But this is the problem, when I adjust the BISS so that idle is 750-800 it stays there when the connector pins are grounded.
But when i stop engine, take wires off, and start the engine, damn thing takes idle to 950-1000rpm.

Again if i ground the pins and look now, idle is right, in 750-800rpm...

What makes the idle rice again to 1000rpm?

Should i reset ecu ?

thanks.

 

[BUCK]

Yes - you could reset ECU - but actually the ECU may figure it out after some driving & lower idle all by itself - & the ECU takes over based on what it sees - it could be sensing AC usage - headlites on - Power Steering usage - below Normal Coolant Temps - etc, etc.

 

[teme]

even when all electric devices such as lights, a/c, blower, all off, idle still in 1k rpm

well, i'm gonna tru to reset ecu this week, we will see the effect, biss screw is almost set to max closed it can be, and idle is perfect with the pins grounded...

this kinda of things just drives me crazy

 

[SpeedFreak03]

Maybe your ECU is ####ed up, how do the caps look? Is the board burnt or anything?

 

[teme]

hehe

I don't think there is nothing wrong in the ecu, cause i read fault codes and none came up, everything blinked okay

And idle is working great but only 200rpm too high

maybe could be small leak somewhere... that's shitty to investigate