Warm ICE staying on

How warm is it at that point? If you're running the heater, it
may not even matter since the ICE tends to stay on more to provide
that. You could try turning the heater off [fan "off" button] just
before you reach the top of your hill.
.
If you have the luxury/safe space to stop briefly after your climb,
you could come to a halt long enough to force that "5-second-delayed
shutdown" thing that usually gets you back in stage 4, and then
gently keep going on electric. Traffic permitting.
.
_H*

 

I agree that the heater or defroster is a likely culprit. Turning the climate control 'off' may solve it.

And remember, if you brake to a stop in "B" mode, then move to Neutral then Drive, you can force an engine shutdown immediately without having to wait for the 5-10 second timeout.

 

I agree with Efusco there are times with a fully warmed up engine (I check with a ScanGage) when you can not get it to stop. I have not figured it out. For a while I thought it happened on very slight inclines, but that is not it. Some bit of programing that still needs to be figured out. I will try the B Neutral Drive trick. The problem it never lasts very long 2-3 Min then back to normal function.

 

If the problem is that the engine won't shut of with 'feathering' at realtively low speeds, try this.

Run it up to 35-36 mph for just a second, then lift off the gas completely. You may find it immediately shuts off, then you can drop your speed back down and stealth along.

I don't know why, but it seems to re-enter stage 3 or something. It won't be completely cured until you do the full stop and let it shutdown normally, but you can induce it to shut off somewhat.

I find this usually occurs when I've been stealthing on and off a lot, as in stop and go traffic. At some point, it decides to stay on. It's almost like it decides it needs another warmup cycle.

But, once I get the speed up to 35-36, it seems willing to cut off again.

(shrug)

 

Does the ScanGage only measure coolant temp? Maybe there's something else (Catalytic Converter?) that the Prius wants to keep warm. It's such a contrary beast sometimes.

 

Is it the same direction each time, or both directions?

Take a marble to that spot, drop it on the road, and see if it rolls the way you expect it to.

Everywhere I've ever lived there's been a road somewhere that the locals claim is 'haunted'.

The normal story is that someone was pushing or pulling something up the hill when they died, and if you go there and put your car in neutral, the ghost will come and push your car 'uphill'.

The trick is that it's an optical illusion. The direction your eyes think is downhill is really uphill. It can be quite steep depending on the quality of the illusion.

The traditional use for these spots is to take your date there, tell them the story, demonstrate, and then 'comfort' them, much like you do when they jump into your arms in a horror movie.

Of course, since everyone knows about the spot, and everyone goes there, it's a pretty sure bet that theres some faking involved in the jumping, but then it's the same at horror movies right?

 

The ScanGage does a limited amount of things and is quite generic. I have looked at %power, gallons/hour, engine rpm, I think I can get air intake temp but can not get the catalytic converter temps. I have often wondered about this. How quickly can the converter cool off. I know that coolant temps can drop fast early in the warm up cycle, so you can get a good glide then the temp drops and it is tough until the engine heats up. The more I learn the more I need to know.

 

Yo like those "gravity houses" that are road side attractions. I know I have one area on my regular commute that appears to be up hill that is either flat or down hill because I always get a great glide on that strech