1227747 - A little Help Please :-)

[MxRace75]

I have a few questions but I'll start with idle.

I see IAC-Desired C/L Idle Speed table but that is only for in Drive.

What controls the Desired C/L Park/Neutral Idle Speed.??

I'm new to the old.. lol I've done plenty of tuning on the newer GM cars but not so much on the the older ones..

[EagleMark]

I see IAC-Desired C/L Idle Speed table but that is only for in Drive.

What controls the Desired C/L Park/Neutral Idle Speed.??

..
Pot luck! There's no real setting, it's aaround there.... it's really a poor idle specific RPM ECM...

[MxRace75]

I found this --> http://www.gearhead-efi.com/Fuel-Injection/showthread.php?605-IAC-Logic-for-1227747-Robert-Rauscher-10-14-2000-updated-12-4-00

Has some pretty good info. I guess I'll just mess around and see what I can mess up ( I mean fix )

[EagleMark]

Excellent article. You'll find the idle is always close to what is set too, but always a little off when not warm in gear.

[MxRace75]

I see in your sig that you have or had the same PCM. I can't believe how slow the data stream rate is (about 1 time a second) compared to my friends 95 burban (like 10 datapoints a second)

Its gonna make for some choppy data.

[EagleMark]

Yes it does but it has never stopped me from a perfectly fine running tune.