87 'YJ power brakes...
08-24-2005, 01:30 PM
#1
Guest
Posts: n/a
87 'YJ power brakes...
My jeep idles around 700 rpm in neutral. When I
pump the brake pedal several times quickly the
rpm picks up about 300 rpm (to about 1000).
I've had it a couple years and its always done it.
Is this normal? I don't remember any of my other
cars doing it.
--Charlie
pump the brake pedal several times quickly the
rpm picks up about 300 rpm (to about 1000).
I've had it a couple years and its always done it.
Is this normal? I don't remember any of my other
cars doing it.
--Charlie
08-24-2005, 04:27 PM
#2
Guest
Posts: n/a
Re: 87 'YJ power brakes...
Hi Charles,
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
08-24-2005, 04:27 PM
#3
Guest
Posts: n/a
Re: 87 'YJ power brakes...
Hi Charles,
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
08-24-2005, 04:27 PM
#4
Guest
Posts: n/a
Re: 87 'YJ power brakes...
Hi Charles,
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
08-24-2005, 04:27 PM
#5
Guest
Posts: n/a
Re: 87 'YJ power brakes...
Hi Charles,
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
Yes, your power brake diaphragm is powered by vacuum, which of
course bypasses your throttle butterfly.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Charlie Dellacona wrote:
>
> My jeep idles around 700 rpm in neutral. When I
> pump the brake pedal several times quickly the
> rpm picks up about 300 rpm (to about 1000).
>
> I've had it a couple years and its always done it.
> Is this normal? I don't remember any of my other
> cars doing it.
>
> --Charlie
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