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[LAT] Runaway Prius hits 90 mph before stopping with aid of CHP - Page 20

post #191 of 400
Quote:
Originally Posted by Mootsfox View Post
I wanna see a video of you trying to downshift effectively in your auto.
I'm having trouble with that part myself.

How do you control your downshift in an auto with no clutch?
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post #192 of 400
Autos have gear selectors, in a normal car it usually goes Park, Reverse, Neutral, Over Drive, Drive, 2, 1. Sometimes OD is electronic controlled and is not on the gear selector.

You can go from drive (which allows the trans to shift into 3rd and 4th) to 2nd and it will down shift but it might cause damage to your clutch plates in the trans. Its not as effective as it would in a clutch because of the power loss in your torq converter, but it will slow you down and limit how fast you can go. You should only really do that in case of an emergency. I have had to do it in my blazer.
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post #193 of 400
Quote:
Originally Posted by Blooddrunk View Post
Autos have gear selectors, in a normal car it usually goes Park, Reverse, Neutral, Over Drive, Drive, 2, 1. Sometimes OD is electronic controlled and is not on the gear selector.

You can go from drive (which allows the trans to shift into 3rd and 4th) to 2nd and it will down shift but it might cause damage to your clutch plates in the trans. Its not as effective as it would in a clutch because of the power loss in your torq converter, but it will slow you down and limit how fast you can go. You should only really do that in case of an emergency. I have had to do it in my blazer.
That's what I was thinking about.

So it wouldn't be a gradual shift as it would be from lifting your foot slowly of the clutch, it would be more the equivalent of going from 4th to 2nd and letting off the clutch quickly and sending your rev counter into the red?
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post #194 of 400
...
Edited by purduepilot - 3/9/10 at 2:15pm
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post #195 of 400
Thread Starter 
Quote:
Originally Posted by Blooddrunk View Post
After reading the article and all the posts in this thread I came to the conclusion that about 1/3 of the posters in this thread actually read the article and are just ranting.
You'd be surprised, many just read the title.

Quote:
Originally Posted by Duesco View Post
Well, normal car brakes. The 19"/15" carbo-ceramic Brembo battleship stoppers on the Enzo Ferrari could probably handle it. XD
Like ljason8eg said previously, but I guess no one bothers to click on links anymore. Here's a picture so you can visualize what we are talking about when we say "normal" cars are able to brake from 90mph.



Therefore I find it very fishy why the Prius could not brake properly as braking is a fundamental feature no automobile manufacturer should get wrong.
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post #196 of 400
Quote:
Originally Posted by GrizzleBoy View Post
That's what I was thinking about.

So it wouldn't be a gradual shift as it would be from lifting your foot slowly of the clutch, it would be more the equivalent of going from 4th to 2nd and letting off the clutch quickly and sending your rev counter into the red?
It's abrupt and can be a bit jerky, but later model cars shouldn't downshift if the computer knows that it'll redline the motor. For example if I'm going along in 2nd gear in my Accord I can put the shifter into "1" but if I'm going fast enough that it'll redline, it'll stay in 2nd.
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post #197 of 400
overclocked car when wrong? lol
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post #198 of 400
Quote:
Originally Posted by GrizzleBoy View Post
That's what I was thinking about.

So it wouldn't be a gradual shift as it would be from lifting your foot slowly of the clutch, it would be more the equivalent of going from 4th to 2nd and letting off the clutch quickly and sending your rev counter into the red?
Pretty much. The RPM would go down pretty quick as the torq converter adjusts.
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post #199 of 400
Quote:
Originally Posted by GrizzleBoy View Post
I'm having trouble with that part myself.

How do you control your downshift in an auto with no clutch?
If your gas was stuck you can't auto downshift. Your downshifting but your still gassing it.

Quote:
Originally Posted by kremtok View Post
OK folks, 2008 Blue Toyota Prius owner and trained casualty investigator here to set a few things straight.

1. The car WILL shift into neutral at speed. This is preferable to cutting the engine because, like on any car, you will still have hydraulic power to the brakes beyond what is stored in the accumulator.
2. The 2008 Prius uses electrically-assisted power steering. Cutting all power to the car would remove the power steering, but at moderate to highway speeds, any car would still be controllable, including the Prius.
3. This car was not recalled as a part of the recent 'sudden acceleration' problem. The November recall was because floormats were sticking the accelerator, which in my admittedly biased yet perhaps more qualified view is more operator error than design flaw. Whether you drive a Prius or an old Willys Jeep, please don't put the floor mat on top of the throttle. 2004-2009 Prius recall
4. Even if, as alleged by many Toyota owners recently, the accelerator became 'stuck,' this would not lead to runaway, uncontrolled acceleration. At most, the car would level out at whatever its last throttle input was, but it would not accelerate with no input from the driver. Try it with your car - hit the accelerator and stick it there with your foot and report back what happens.
5. This car was not affected by the recent Prius brake recall. That recall is for model year 2010 vehicles only, which is the next generation version of the car. Incidentally, that recall wasn't for brake failure, but rather 'inconsistent' pedal feel that was caused by a software issue. 2010 Prius Recall
I'm a owner of a white 2008 Prius. I got mailed some paper explaining what was wrong with my model, and come to find out both recalls hand nothing to do with the my model. So when I read this guy's story I thought it was total BS. He couldn't even get the scam down right.
Edited by Pings - 3/9/10 at 3:30pm
post #200 of 400
Quote:
Originally Posted by Pings View Post
If your gas was stuck you can't auto downshift. Your downshifting but your still gassing it.
you can downshift by manually moving the lever from D to 1, 2, 3, whatever depending on your car.

Downshift when your throttle is stuck and you might have a little case of poof goes the engine though
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