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Loss of Braking in Spin?

Old Jun 19, 2006 | 05:04 PM
  #1  
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Loss of Braking in Spin?

About a year ago I had a particularly nasty spin and as I was traveling backwards the brake pedal went to the floor leaving me without brakes until I stopped. When I released the pedal and reapplied everything was back to normal. I had forgotten about it until this past weekend when Jim Reyenga had the same thing happen in a borrowed RX-8 (not mine). So apparently I wasn't imagining it and/or my car isn't defective. Any ideas/explanations on what's going on here?
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Old Jun 19, 2006 | 05:15 PM
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From: Buddhist Monastery, High Himalaya Mtns. of Tibet
Was DSC turned on? Could it be the DSC was fighting for control and not letting you have any?
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Old Jun 19, 2006 | 05:26 PM
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DSC was completely off in both cases (i.e 11 second hold). We never autox with it on intentionally.
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Old Jun 19, 2006 | 05:33 PM
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From: Buddhist Monastery, High Himalaya Mtns. of Tibet
Originally Posted by Sparky
DSC was completely off in both cases (i.e 11 second hold). We never autox with it on intentionally.
Believe me, I understand why. Could the force of the spin have moved all the brake fluid out of the base of the master cylinder? Leaving it against the side of the reservor? If this is posible, the piston in the master cylinder would be pushing air.
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Old Jun 19, 2006 | 05:34 PM
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I would guess the ecu/pcm did it as some sort of ice mode program.
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Old Jun 19, 2006 | 05:46 PM
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Originally Posted by ULLLOSE
I would guess the ecu/pcm did it as some sort of ice mode program.
All those can do is interupt brake pressure from the pedal to the wheel cylinder. This is allowing the release of brake pressure somehow. Doesn't feel anything like ABS, more like loss of vaccum boost in a car with poor brakes. I've spun several other times and these two occurances are the only ones I know of where this happened. Both were pretty violent but ended up with the car sliding backwards.
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Old Jun 19, 2006 | 07:33 PM
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Did the engine stall???
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Old Jun 19, 2006 | 08:02 PM
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Originally Posted by Sparky
I've spun several other times and these two occurances are the only ones I know of where this happened. Both were pretty violent but ended up with the car sliding backwards.
Then stop doing that.
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Old Jun 19, 2006 | 08:55 PM
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Wrong pedal??
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Old Jun 19, 2006 | 09:03 PM
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Originally Posted by dannobre
Did the engine stall???
Nope. Both feet in.
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Old Jun 19, 2006 | 09:08 PM
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Wow. That is scary.
I'm gonna go try to duplicate that tonight.
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Old Jun 19, 2006 | 09:49 PM
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Originally Posted by ULLLOSE
Then stop doing that.
I keep telling myself that.
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Old Jun 19, 2006 | 11:41 PM
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Originally Posted by ULLLOSE
Then stop doing that.
Ja, ULLLOSE says I have skinny wheels, why don't you get some like me?

Then you can really your 8 and have fun!
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Old Jun 20, 2006 | 02:07 AM
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that's typical for most ABS systems when the wheel direction reverses while going backwards
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Old Jun 20, 2006 | 07:38 AM
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Originally Posted by Sparky
Nope. Both feet in.

Try both feet OUT!
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Old Jun 20, 2006 | 08:27 AM
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i've spun several times while autocrossing and the brakes on my 8 do stop working
briefly while moving backwards. normally this is not a problem except for the one time
i got the car stopped about 20 feet from a light pole...

fyi, an ice driving tip. if you are headed toward a tree and your tires can't get any grip
on the ice to turn and the ABS won't let you lock up the brakes, turn your engine off
and pray you stop before you hit the tree!
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Old Jun 20, 2006 | 09:19 AM
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Originally Posted by Sparky
Nope. Both feet in.

yeah, but did you shake it all about ...
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Old Jun 21, 2006 | 03:11 PM
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Originally Posted by TeamRX8
yeah, but did you shake it all about ...
goodness gracious, that was painful
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Old Jun 21, 2006 | 03:40 PM
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Originally Posted by TeamRX8
yeah, but did you shake it all about ...

What is this all about?
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Old Jun 21, 2006 | 08:58 PM
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you've never done the Hokey Pokey?
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Old Jun 22, 2006 | 05:45 PM
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Originally Posted by TeamRX8
you've never done the Hokey Pokey?
You put your right foot in,
You put your right foot out;
You put your right foot in,
And you shake it all about.
You do the Hokey-Pokey,
And you turn yourself around.
That's what it's all about!

I was making another "Hokey Pokey" reference.
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Old Jun 23, 2006 | 12:33 AM
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Originally Posted by Hyperborea
You put your right foot in,
You put your right foot out;
You put your right foot in,
And you shake it all about.
You do the Hokey-Pokey,
And you turn yourself around.
That's what it's all about!
Wasn't that the cause of the problem in the first place?!?

OMG, it's a recursion problem
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