Stumble at a stop?

<div class='quotetop'>QUOTE(Tideland Prius @ Apr 19 2006, 01:25 AM) [snapback]241953[/snapback]</div>

also, make sure your foot's firmly on the brake. I've noticed that I sometimes have a very light touch on the brake and my baby doesn't know I want her to take a nap.

 

<div class='quotetop'>QUOTE(onerpm @ Apr 21 2006, 07:30 PM) [snapback]243436[/snapback]</div>

yeah if my foot isn't completely on the brake, the electric motor will still suck power from the battery and try to move the wheels (but I'm stopped anyway because the force on the brake is more than the motor is making) as if to simulate the "creep" effect of a normal car when the engine is idling. I suspect the engine would also think that it wouldn't have to turn off if you didn't press all the way down.

 

<div class='quotetop'>QUOTE(Matt Domenici @ Aug 6 2006, 11:07 PM) [snapback]298905[/snapback]</div>

Have you looked at the 5 stages of Pris operation yet? Here is a link:
http://priuschat.com/forums/kb.php?k=14&mode=article

I have seen this same question several times so you aren't alone in wondering about it. I have the impression that it is more distinct in some cars than others. Or maybe some of us don't notice as much? My car is a bit rougher when it shuts down in stage 2 or 3 than when it's in stage 4. I have 20K miles now and to tell the truth I have seen no difference due to mileage, cold weather may make it rougher though.

 

<div class='quotetop'>QUOTE(Matt Domenici @ Aug 7 2006, 02:07 AM) [snapback]298905[/snapback]</div>

When they are cold, they do that. It's just the way the engine works burning off the remaining fuel, and not cause for any concern.

Tom

 

<div class='quotetop'>QUOTE(Matt Domenici @ Aug 7 2006, 05:25 PM) [snapback]299256[/snapback]</div>

It depends on your definitions of "entire car" and "shake." In my case, when the engine is cold (I'm at about 7K miles), it definately feels to me like a rough shutdown (almost like a stalling). That causes the car to vibrate (I don't know if I'd say "shake") while its shutting down. I strongly suspect this is a case of different people having different sensitivities to shaking, but who knows? Do you have any friends with Prii? Can you get them to drive your car (or you drive their car) to see if the shaking is any worse in your car?

 

<div class='quotetop'>QUOTE(Matt Domenici @ Aug 7 2006, 02:25 PM) [snapback]299256[/snapback]</div>

No mine absolutely does not shake like that and never has. In fact if the audio system is off so I can hear the engine I notice it is still running when I stop in stages 2 or 3, but I usually just hear it stop and don't actually feel it. Sometimes there may be just a slight vibration. Of course in stage 4 the engine is stopped (usually, I'm not sure it always is) before the car stops so there is nothing to feel.

I was thinking about your problem earlier, do you know anyone else who has a Prius? or is there a Prius Meetup Group near you? If so you could have another Prius person ride with you or even drive your car and make a comparison.

 

<div class='quotetop'>QUOTE(Matt Domenici @ Aug 7 2006, 05:25 PM) [snapback]299256[/snapback]</div>

On a cold shutdown, yes, the entire car shakes - really more of a shudder.

Tom

 

Phew... I was searching for this very topic and am glad to hear that I'm not the only one experiencing this. I was getting worried that there was something wrong with Trixie! She also shakes quite a bit on a cold shut down. It's definitely not a smooth shut off and feels pretty rough. I've also noticed it seems to be more pronounced when the tank is less than half full of gas. I'm at 2500 miles now and will wait to see if it smooths out when the engine truly breaks in.