This doesn't prove that you're not crazy!

 

Completely normal.

When rolling to a stop with the clutch in, the computer will keep the idle slightly higher than normal to keep strain off the clutch.

On start up, the idle will speed up a little higher then normal and the ignition will be in single fire mode. The ecm is looking for the crankshaft position sensor to sense a slight pause or slowdown in engine speed after one of the cylinders fires to determine the firing timing.

 

With the clutch IN? If the clutch handle is pulled in there is no strain on the clutch. But if you meant clutch out, that kinda makes sense, as in when you are engine braking to a stop. Keeping idle higher would actually help not lug the engine if you coasted to a stop in gear and got a little too slow.

As far as the starting/single fire/CPS stuff...I don't know anything about that.

 

Clutch in..... I understand if the clutch is out and I am rolling 20 mph the rpm will be higher. LOL!
That's common sense. Lots of folks don't have that these days. LOL!

 

I was replying to chief0299's post, not yours. I already agreed with you, remember?

 

LOL! thanks... usually people don't agree with me to much.

 

I probably should've explained it a little more.

You'll notice the higher idle with the clutch in when rolling to a stop. As you said, it helps to keep from lugging the motor at low revs but it does help keep strain off the clutch pack if you have to let the clutch out in an emergency or if you're doing something like coasting through a stop. At least, that's how it's been explained to me by wrenches with much more time in the guts of HD engines than I have.