Hard braking- Flat battery

[j]

Hi all,

My 10 yr year old Subaru Liberty had a flat battery and died on me
whilst trying to start ignition (problem diagnosed as jumper leads
worked magic) I tried a rolling start, I have no idea where this came
from somehow I thought it would work. But it didnt and my brake pedals
felt really heavy. Like it was really resistant to being stepped upon.
Can anybody shed some light as to why this happens? And is it safe to
drive it out to the mechanics?

Thank you all for your helpful input.

Cheers!

 

[Tony Hwang]

Hi all,

My 10 yr year old Subaru Liberty had a flat battery and died on me
whilst trying to start ignition (problem diagnosed as jumper leads
worked magic) I tried a rolling start, I have no idea where this came
from somehow I thought it would work. But it didnt and my brake pedals
felt really heavy. Like it was really resistant to being stepped upon.
Can anybody shed some light as to why this happens? And is it safe to
drive it out to the mechanics?

Thank you all for your helpful input.

Cheers!

Hmmm,
Electronic fuel injected cars can't be rolling started.
This is no brainer. It can't generate spark like ancient
coil/point ignition. Also if engine is not running, you don't have
master cylinder vaccuum boost(power brake). Obviously you are too
young to remember old brakes without power boost?

 

[j]

Yea, I forgot to mention I am a 19 yr old student who doesnt know a
thing =X Sorry! And thanks for your help too =)

 

[suburboturbo]

Yea, I forgot to mention I am a 19 yr old student who doesnt know a
thing =X Sorry! And thanks for your help too =)

I question the link between EFI and roll starting. I've had no
trouble starting my 2004 WRX from a roll. Of course, the brake issue
holds true. No power - no power brakes, or steering. I remember
driving a '65 Catalina (421 tri-power 2+2) that came from the Pontiac
factory with no power assisted anything. What a monster to steer, but
a thrill to drive. Could have had that car for $500. Neither I nor
the owner could handle the 7-8 mpg, but what an investment that could
have been.

 

[Carl 1 Lucky Texan]

I question the link between EFI and roll starting. I've had no
trouble starting my 2004 WRX from a roll. Of course, the brake issue
holds true. No power - no power brakes, or steering. I remember
driving a '65 Catalina (421 tri-power 2+2) that came from the Pontiac
factory with no power assisted anything. What a monster to steer, but
a thrill to drive. Could have had that car for $500. Neither I nor
the owner could handle the 7-8 mpg, but what an investment that could
have been.

It may depend on how dead/'flat' the battery is and if there's still
pressure in the fule rails.

Carl