Cruise control Problems?

It DRIVES me crazy 2 a écrit :
> Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
> vehicular manslaughter for killing her daughter as well as
> herdaughter's best friend. They were killed as the Bimmer left the road
> at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
> control causing sudden acceleration. Experts testified that a "rogue
> spark" could cause such a malfunction. BMW said that they receive about
> 50 sudden acceleration claims on about 5 million cars.
>
> I have never thought about cruise control malfuntioning. People said
> the power of the engine overcame their braking efforts and that it all
> happened so quickly within a very short distance.
>
> Other than yanking on the emergency brake, are there any other ideas to
> stop the runaway car if this should happen? Has anyone ever experienced
> this.?
>
> Peter
>

The cruise on both of my Saab 900's were dead when I got them...

So I fixed them, and garnered a whole lot of factory and outside info on
how the system works, and it's pretty typical

Basically when you turn on the cruise, the cruise computer is turned on
The APC (turbocharger boost control) is turned off, so the max turbo
pressure is approx 1/2 bar. When the SET SPEED button is applied, the
speed reading off the speedometer monitored by the computer is set. So
the car will maintain 140km/h (87mph) and it will apply extra throttle
if the car slows to 139 and back off at 141. If the SET SPEED is held
in, the car will accelerate moderately. Not nearly as fast as with the
cruise off and your foot floored, but perhaps an increase of 2km/h/s
(two kilometres per hour per second), about the same as putting it to
RESUME if the car is going slow. Definately controllable. If the brake
pedal or clutch is even tapped a slight amount, the cruise is turned off
instantly. Not only does this disable the electronic portion of the
system, it also breaks the vacuum to the vac motor that physically holds
down the accelerator pedal, so if the computer went bezerk the cruise
still goes off. Press SET SPEED again and it will take the new speed.
Hold the switch to TIP will slow the car.

So I have no idea of how you can make it accelerate without purposely
taking the vac hose off and sucking on it...

--
----------------------
http://www.saab-900.tk
The Saab Tech Resource
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C.H. a écrit :
> On Sat, 18 Dec 2004 21:50:35 +0000, Art Merlyn wrote:
>
>
>>Why the hell do people even use cruise control? It's nothing but trouble
>>waiting to happen. Besides, it's one less thing that you have control
>>over...
>
>
> Have you ever tried to drive across, say, Nevada, without using a cruise
> control? I can assure you your foot will be about ready to fall off after
> several hundred miles.
>
> Chris

why not take a brick and put it on the pedal?

--
----------------------
http://www.saab-900.tk
The Saab Tech Resource
----------------------

C.H. a écrit :
> On Sat, 18 Dec 2004 21:50:35 +0000, Art Merlyn wrote:
>
>
>>Why the hell do people even use cruise control? It's nothing but trouble
>>waiting to happen. Besides, it's one less thing that you have control
>>over...
>
>
> Have you ever tried to drive across, say, Nevada, without using a cruise
> control? I can assure you your foot will be about ready to fall off after
> several hundred miles.
>
> Chris

why not take a brick and put it on the pedal?

--
----------------------
http://www.saab-900.tk
The Saab Tech Resource
----------------------

C.H. wrote:

> Have you ever tried to drive across, say, Nevada, without using a cruise
> control? I can assure you your foot will be about ready to fall off after
> several hundred miles.

I drove from Louisiana to West Virginia in one stretch (other than food
and gas stops) without using cruise control. My right foot did not fall
asleep nor did I experience any cramps.

The total distance was around 880 miles.

C.H. wrote:

> Have you ever tried to drive across, say, Nevada, without using a cruise
> control? I can assure you your foot will be about ready to fall off after
> several hundred miles.

I drove from Louisiana to West Virginia in one stretch (other than food
and gas stops) without using cruise control. My right foot did not fall
asleep nor did I experience any cramps.

The total distance was around 880 miles.

"It DRIVES me crazy 2" > wrote in message
oups.com...
> Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
> vehicular manslaughter for killing her daughter as well as
> herdaughter's best friend. They were killed as the Bimmer left the road
> at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
> control causing sudden acceleration. Experts testified that a "rogue
> spark" could cause such a malfunction. BMW said that they receive about
> 50 sudden acceleration claims on about 5 million cars.
>
> I have never thought about cruise control malfuntioning. People said
> the power of the engine overcame their braking efforts and that it all
> happened so quickly within a very short distance.
>
> Other than yanking on the emergency brake, are there any other ideas to
> stop the runaway car if this should happen?
neutral or shut the car off with the key
Has anyone ever experience this.?
>

"It DRIVES me crazy 2" > wrote in message
oups.com...
> Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
> vehicular manslaughter for killing her daughter as well as
> herdaughter's best friend. They were killed as the Bimmer left the road
> at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
> control causing sudden acceleration. Experts testified that a "rogue
> spark" could cause such a malfunction. BMW said that they receive about
> 50 sudden acceleration claims on about 5 million cars.
>
> I have never thought about cruise control malfuntioning. People said
> the power of the engine overcame their braking efforts and that it all
> happened so quickly within a very short distance.
>
> Other than yanking on the emergency brake, are there any other ideas to
> stop the runaway car if this should happen?
neutral or shut the car off with the key
Has anyone ever experience this.?
>

On 18 Dec 2004 09:24:33 -0800, It DRIVES me crazy 2 > wrote:
>Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
>vehicular manslaughter for killing her daughter as well as
>herdaughter's best friend. They were killed as the Bimmer left the road
>at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
>control causing sudden acceleration. Experts testified that a "rogue
>spark" could cause such a malfunction. BMW said that they receive about
>50 sudden acceleration claims on about 5 million cars.

>I have never thought about cruise control malfuntioning. People said
>the power of the engine overcame their braking efforts and that it all
>happened so quickly within a very short distance.

>Other than yanking on the emergency brake, are there any other ideas to
>stop the runaway car if this should happen? Has anyone ever experienced
>this.?

You need to have your cruise control unit removed immediately. You're too
damn stupid be in a car with such a unit.

Try hitting the brake pedal! No engine less than 250HP can outpower even
the brakes in a 70's VW bug.
Put the tranny in neutral.
Turn off the ****ing key. You have heard of how the ignition key controls
.... duh.... uh... the ignition? And how the engine won't run without
ignition?
Aim for a tree. At least you'll only hurt yourself.

On 18 Dec 2004 09:24:33 -0800, It DRIVES me crazy 2 > wrote:
>Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
>vehicular manslaughter for killing her daughter as well as
>herdaughter's best friend. They were killed as the Bimmer left the road
>at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
>control causing sudden acceleration. Experts testified that a "rogue
>spark" could cause such a malfunction. BMW said that they receive about
>50 sudden acceleration claims on about 5 million cars.

>I have never thought about cruise control malfuntioning. People said
>the power of the engine overcame their braking efforts and that it all
>happened so quickly within a very short distance.

>Other than yanking on the emergency brake, are there any other ideas to
>stop the runaway car if this should happen? Has anyone ever experienced
>this.?

You need to have your cruise control unit removed immediately. You're too
damn stupid be in a car with such a unit.

Try hitting the brake pedal! No engine less than 250HP can outpower even
the brakes in a 70's VW bug.
Put the tranny in neutral.
Turn off the ****ing key. You have heard of how the ignition key controls
.... duh.... uh... the ignition? And how the engine won't run without
ignition?
Aim for a tree. At least you'll only hurt yourself.

On 18 Dec 2004 09:24:33 -0800, It DRIVES me crazy 2 > wrote:
>Last nite, the TV show, "48 Hours", showed a Florida mother guilty of
>vehicular manslaughter for killing her daughter as well as
>herdaughter's best friend. They were killed as the Bimmer left the road
>at 80-90mph and hit a tree. Her defense was a malfunctioning cruise
>control causing sudden acceleration. Experts testified that a "rogue
>spark" could cause such a malfunction. BMW said that they receive about
>50 sudden acceleration claims on about 5 million cars.

Oh yeah. Like the audi. Funny how all those claims vanished when audi
added an interlock. The idiots were confusing the pedals and assuming
that they couldn't possibly be doing so, would push as hard as they could...

on the accelerator pedal.