Cold Idle Control issues.

[907DAVE]

Now that the winter is here my cold idle control is in the dumps.

This is an issue that presented itself a few years ago when my alternator was not charging well at idle, or whenever there is an accessory left on that drops battery voltage.

Problem is that whenever there is a decent draw (or low voltage) on the charging system the "automatic high idle" will not work. If I leave all accessories off (heater, lights, radio) it will work normally.

Tonight I payed around with it a bit........I went in and setup the Cold Idle Multiplier and Cold Idle Control to always be in "high idle". This worked great until I flipped on the lights or heater, then right back down to normal idle speed.

The system voltage (according to the Scangauge) is right at 14.2-14.4v.

I am starting to get a bit irritated with this as the truck really does not warm up to well at base idle, and I am not willing to turn off the heater.....lol.


Any ideas why this is, or what parameter to adjust to relax this a bit?