View Single Post
  #36   Report Post  
Posted to uk.d-i-y
whisky-dave[_2_] whisky-dave[_2_] is offline
external usenet poster
 
Posts: 10,204
Default Accelerator stuck wide open while car is going fast: what shouldyou do?

On Monday, 23 July 2018 09:31:45 UTC+1, Nightjar wrote:
On 22/07/2018 22:52, Chris Bartram wrote:
On 22/07/18 22:11, NY wrote:
This question was posed in a video reconstruction of an incident in
the US.

You were offered three choices:

- yank on the handbrake
- put the car in neutral
- turn off the ignition

The "correct" answer was to put the car in neutral. Turning off the
engine
would lock the steering. Pulling on the handbrake would lock the rear
wheels.

I'm not sure I agree with their answer.

I had this very thing happen to me - when I was learning to drive. I was
going up a steep hill so I was in a low gear with the engine going
quickly.
When I got to the top and changed from second to third, the engine
raced but
I put it down to bad clutch/accelerator coordination. When it happened
again
as I changed to fourth, I realised it wasn't - especially as the car shot
forward like a scalded cat.

I realised what had happened very quickly and also knew what would
happen if
I pressed the clutch or put the car into neutral, which was my first
instinct: the engine would race very quickly and if it went well over the
redline speed, it could well throw a piston which would be very bad
news if
all that fast-moving metal came to rest in an instant.

So somehow I managed very calmly to turn the ignition just far enough to
kill the engine by putting it into the accessory position without turning
all the way off. Had I been travelling "at 120 mph with the engine
redlining" (as it said int he video) it might have been a *little* more
difficult to turn it just the right amount. ;-)

Am I right that the last thing you want to do is let the engine greatly
exceed its redline speed and risk it seizing up (I'm assuming that the
car
is old enough not to have a rev-limiter)? Do any steering locks actually
lock the steering while the key is still in, even in the off position? I
thought it only locked when the key was removed - for this very
reason, so
you can safely turn off the engine in the event of an emergency.

Discuss...

Turning the engine off doesn't lock steering. That only happens when
removing the key.


Vehicles vary, so the answer may depend upon what you are driving at the
time.


I thought automatics and manual cars were differnt in what you should do, in america perhaps they assume you are driving a automatic.

One thing I found confusing was that in the US you are meant to cross yuor arms when sterring and you'd fail the test if you arms didn't cross, whereas in the UK you are meant to keep the 10:2 and you are meant to shuffle the hands while turning the steering wheel.


Keyless start works differently, for example. Also some don't have
a hand brake - only a switch operated parking brake. Putting it into
neutral and slowing with the foot brake is about the only thing
guaranteed to work on all cars.

--
--

Colin Bignell