ice shutdown vibration

toolbox · 10-12-2004, 12:50 AM

i searched the forums and did not see any related posts.
Has anyone else noticed when the ice shutsdown it can cause an excessive vibration almost like a broken motor mount. i have noticed my car starting to do this harder and harder. this morning when coming to a red light the ice shut down and it sputtered 2-3 seconds hard enought to feel a vibration through the steering wheel. from what i have read the ice is under load during shut down and you are going to feel it quit but i dont think it should spill your coffee either. i talked to a couple shops all said this was not normal. any ideas? oh yea 3k miles

seeh2o · 10-12-2004, 02:51 AM

Check out these links:
http://www.priuschat.com/forums/viewtopic....ighlight=shimmy

http://www.priuschat.com/forums/viewtopic....&highlight=idle

http://www.priuschat.com/forums/viewtopic....highlight=rough

eak354 · 10-12-2004, 03:46 AM

it's something that get's better or less noticeable as you break-in your car. when i first got mine those 'shudders' of the shutting down of the ICE did kind of unnerve me at first... wondering if they were normal. then as i got used to them i seldom even notice it anymore... and when i do i welcome it knowing i'm going stealth! :mrgreen:

DaveinOlyWA · 10-12-2004, 11:26 AM

the shutter is normal and will lessen as the car warms up and breaks in over time.

also the fact that the engine design in the Prius opens all the valves at the same time lends to more momentum to the flywheel. in a normal engine when a valve is always closed and therefore providing some resistance to the flywheel, the shake is not pronounced since when the engine is shutoff, valve pressure allows less than one full revolution of the engine.

in the Prius, the flywheel may rotate 2-3 full revolutions before coming to a stop.

toolbox · 10-12-2004, 12:00 PM

thanks for the links and follow up guys.

i feel a lot better now knowing other people have noticed this also and have had no problem

onerpm · 10-12-2004, 12:22 PM

my 2004 still has the occasional "rough" shutdown after 12,000 miles.
however, I'm currently testing the theory that it might occur (or be worse) more often when I don't have my foot firmly planted on the brake.

rpm

toolbox · 10-12-2004, 04:43 PM

i have noticed the electric doesnt shut off unless you press firmly on the brake also thanks for the tip i am gonna watch that

10-12-2004, 12:50 AM	#1
toolbox Join Date: Sep 2004 Location: St. Louis Posts: 72 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	ice shutdown vibration i searched the forums and did not see any related posts. Has anyone else noticed when the ice shutsdown it can cause an excessive vibration almost like a broken motor mount. i have noticed my car starting to do this harder and harder. this morning when coming to a red light the ice shut down and it sputtered 2-3 seconds hard enought to feel a vibration through the steering wheel. from what i have read the ice is under load during shut down and you are going to feel it quit but i dont think it should spill your coffee either. i talked to a couple shops all said this was not normal. any ideas? oh yea 3k miles

10-12-2004, 03:46 AM	#3
eak354 Senior Member Join Date: Dec 2003 Posts: 433 My Car: 2004 Prius Model: Package: #9 Thanks: 2 Thanked 0 Times in 0 Posts Friends: 0	Re: ice shutdown vibration it's something that get's better or less noticeable as you break-in your car. when i first got mine those 'shudders' of the shutting down of the ICE did kind of unnerve me at first... wondering if they were normal. then as i got used to them i seldom even notice it anymore... and when i do i welcome it knowing i'm going stealth! :mrgreen:

10-12-2004, 12:00 PM	#5
toolbox Join Date: Sep 2004 Location: St. Louis Posts: 72 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Re: ice shutdown vibration thanks for the links and follow up guys. i feel a lot better now knowing other people have noticed this also and have had no problem

10-12-2004, 12:22 PM	#6
onerpm Senior Member Join Date: Aug 2004 Location: MN Posts: 477 My Car: Other Hybrid Model: Package: N/A Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Re: ice shutdown vibration my 2004 still has the occasional "rough" shutdown after 12,000 miles. however, I'm currently testing the theory that it might occur (or be worse) more often when I don't have my foot firmly planted on the brake. rpm

10-12-2004, 04:43 PM	#7
toolbox Join Date: Sep 2004 Location: St. Louis Posts: 72 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Re: ice shutdown vibration i have noticed the electric doesnt shut off unless you press firmly on the brake also thanks for the tip i am gonna watch that

10-12-2004, 02:51 AM	#2
seeh2o Prius OG Join Date: Mar 2004 Location: Los Angeles, CA Posts: 364 My Car: 2004 Prius Model: Package: #2 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Check out these links: http://www.priuschat.com/forums/viewtopic....ighlight=shimmy http://www.priuschat.com/forums/viewtopic....&highlight=idle http://www.priuschat.com/forums/viewtopic....highlight=rough

10-12-2004, 11:26 AM	#4
DaveinOlyWA 3rd Time was Solariffic!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 12,382 My Car: 2010 Prius Model: IV Package: Solar Roof Thanks: 24 Thanked 122 Times in 104 Posts Friends: 10	the shutter is normal and will lessen as the car warms up and breaks in over time. also the fact that the engine design in the Prius opens all the valves at the same time lends to more momentum to the flywheel. in a normal engine when a valve is always closed and therefore providing some resistance to the flywheel, the shake is not pronounced since when the engine is shutoff, valve pressure allows less than one full revolution of the engine. in the Prius, the flywheel may rotate 2-3 full revolutions before coming to a stop.

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