Vacuum pump continously running

[hazemsedra]

I am a new to this group and just starting out with my first EV.
108v converted ford escort that I purchased from portland 1 month ago.
Today while driving I noticed that my vacuum pump was continously running when  
the car was on.  The brakes work well and are firm when the the brake pedal is applied, and
there is enough brake fluid oil.  

I am taking it to my local mechanic who probably has not seen an EV before, any suggestions
as to why the vaccum won't stop? A leak somewhere, the master cylinder, or just the vacuum pump
needs to be replaced?  Thanks for your help as I am just starting out with ev's, however I know it's
the right thing to do.
Thanks
Hazem

[Douglas A. Stansfield]

Probably a leak or no vacuum tank.  Might want to check before you bring to
a local mechanic.  I have seen people that build EVs forget to include a
vacuum holding tank and thus the vacuum pump continues to run.

Just a thought....


Sincerely;

Douglas A. Stansfield
President
www.TransAtlanticElectricConversions.com
973-875-6276 (office)
973-670-9208 (cell)
973-440-1619 (fax)

WHOLESALE ELECTRICITY PROVIDERS
And ELECTRIC CAR PRODUCERS




-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf
Of hazemsedra
Sent: Saturday, October 31, 2009 6:54 PM
To: [hidden email]
Subject: [EVDL] Vacuum pump continously running


I am a new to this group and just starting out with my first EV.
108v converted ford escort that I purchased from portland 1 month ago.
Today while driving I noticed that my vacuum pump was continously running
when  
the car was on.  The brakes work well and are firm when the the brake pedal
is applied, and
there is enough brake fluid oil.  

I am taking it to my local mechanic who probably has not seen an EV before,
any suggestions
as to why the vaccum won't stop? A leak somewhere, the master cylinder, or
just the vacuum pump
needs to be replaced?  Thanks for your help as I am just starting out with
ev's, however I know it's
the right thing to do.
Thanks
Hazem
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[Douglas A. Stansfield]

Also, check to make sure it has a vacuum switch and if it is working
properly.

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf
Of Douglas A. Stansfield
Sent: Saturday, October 31, 2009 7:04 PM
To: 'Electric Vehicle Discussion List'
Subject: Re: [EVDL] Vacuum pump continously running

Probably a leak or no vacuum tank.  Might want to check before you bring to
a local mechanic.  I have seen people that build EVs forget to include a
vacuum holding tank and thus the vacuum pump continues to run.

Just a thought....


Sincerely;

Douglas A. Stansfield
President
www.TransAtlanticElectricConversions.com
973-875-6276 (office)
973-670-9208 (cell)
973-440-1619 (fax)

WHOLESALE ELECTRICITY PROVIDERS
And ELECTRIC CAR PRODUCERS




-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf
Of hazemsedra
Sent: Saturday, October 31, 2009 6:54 PM
To: [hidden email]
Subject: [EVDL] Vacuum pump continously running


I am a new to this group and just starting out with my first EV.
108v converted ford escort that I purchased from portland 1 month ago.
Today while driving I noticed that my vacuum pump was continously running
when  
the car was on.  The brakes work well and are firm when the the brake pedal
is applied, and
there is enough brake fluid oil.  

I am taking it to my local mechanic who probably has not seen an EV before,
any suggestions
as to why the vaccum won't stop? A leak somewhere, the master cylinder, or
just the vacuum pump
needs to be replaced?  Thanks for your help as I am just starting out with
ev's, however I know it's
the right thing to do.
Thanks
Hazem
--
View this message in context:
http://old.nabble.com/Vacuum-pump-continously-running-tp26146716p26146716.ht
ml
Sent from the Electric Vehicle Discussion List mailing list archive at
Nabble.com.

_______________________________________________
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Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

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Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

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Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

[Bob Rice-2]

  Hi Hazem;

  Just a thought?Can ya pull the hose off the pump, and feel/see IF it has
any suction? IF not, you might have a blown diaphram? SOME vacuumm pumps,
not General Murders ones, are replacable.Best acolade for a Vac. Pump is it
SUCKS, quite well IF, it is healthy.If yur getting good suction, you MIGHT
have a leaky hose SOMEWHERE in the system?If the suction is weak, you will
still have brakes, but thre pump hasta work overtime!

    Happy hunting!

    Bob
----- Original Message -----
From: "hazemsedra" <[hidden email]>
To: <[hidden email]>
Sent: Saturday, October 31, 2009 6:54 PM
Subject: [EVDL] Vacuum pump continously running

>
> I am a new to this group and just starting out with my first EV.
> 108v converted ford escort that I purchased from portland 1 month ago.
> Today while driving I noticed that my vacuum pump was continously running
> when
> the car was on.  The brakes work well and are firm when the the brake
> pedal
> is applied, and
> there is enough brake fluid oil.
>
> I am taking it to my local mechanic who probably has not seen an EV
> before,
> any suggestions
> as to why the vaccum won't stop? A leak somewhere, the master cylinder, or
> just the vacuum pump
> needs to be replaced?  Thanks for your help as I am just starting out with
> ev's, however I know it's
> the right thing to do.
> Thanks
> Hazem
> --
> View this message in context:
> http://old.nabble.com/Vacuum-pump-continously-running-tp26146716p26146716.html
> Sent from the Electric Vehicle Discussion List mailing list archive at
> Nabble.com.
>
> _______________________________________________
> General EVDL support: http://evdl.org/help/
> Usage guidelines: http://evdl.org/help/index.html#conv
> Archives: http://evdl.org/archive/
> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>

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Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

[James Massey]

At 09:54 AM 1/11/09, Hazem wrote:

>I am a new to this group

Welcome, you're in the right place for EV advice. Not the only place, but
one of the best, and if you like the 'list' format over a 'forum' format
then probably the best.

><snip> Today while driving I noticed that my vacuum pump was continously
>running
>when the car was on.

This should be a simple fix, as it has to be one of the following things:

1) pump pressure switch failure (vacuum is high enough but the switch won't
turn off) or

2) vacuum leak (vacuum can't get high enough). or

3) pump is dying so can't get the vacuum high enough to turn the switch off.

If you have a vacuum gauge as part of your system then have a look - brake
vacuum in the range of -80 to -95kPa, (approx = -600 to -710mm mercury,
approx = -23 to -27.5 inches mercury, should be adequate to turn the switch
off. If you don't have a vacuum gauge it gets a lot harder to tell what is
going on, as your vacuum can be down by half before you notice the added
braking pedal effort needed.

Find your vacuum pump (simple, since it is running) and follow its' supply
wiring until you find a 'gadget' that has a tube/pipe/hose attached as well
as the wiring. Follow the vacuum tube/pipe/hose to the vaccum system (you
should have some kind of vacuum tank, but maybe not) looking for kinks,
loose connections etc. If all looks well, I suggest getting a small mallet
(large screwdriver handle will substitute) and give the vacuum switch a
sharp tap (or two in different directions), and see if it turns off, if it
does then it was welded shut.

Whatever happens, please post a description of pump and switch (posting
photos somewhere on-line and providing a link is an excelent way to help)
and we will see what we can do to point you or your mechanic in the right
direction to both fix the problem and make sure it is unlikely to come
back. Brakes are too important to not have working right.

Regards

[Technik] James

_______________________________________________
General EVDL support: http://evdl.org/help/
Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

[hazemsedra]

Thanks so much James for taking the time to help me out
and write your datailed note to guide me.
 
After reading your note, I looked for the valve switch on the vacuum pump and
found it.  I noticed the neck of the switch was broken off the valve assembly and is made
of plastic.  I will simply buy a new one and connect it to the valve assembly.

 

I appreciate your help and this forum.

Hazem
 

> Date: Sun, 1 Nov 2009 10:32:31 +1100
> To: [hidden email]
> From: [hidden email]
> Subject: Re: [EVDL] Vacuum pump continously running
>
> At 09:54 AM 1/11/09, Hazem wrote:
>
> >I am a new to this group
>
> Welcome, you're in the right place for EV advice. Not the only place, but
> one of the best, and if you like the 'list' format over a 'forum' format
> then probably the best.
>
> ><snip> Today while driving I noticed that my vacuum pump was continously
> >running
> >when the car was on.
>
> This should be a simple fix, as it has to be one of the following things:
>
> 1) pump pressure switch failure (vacuum is high enough but the switch won't
> turn off) or
>
> 2) vacuum leak (vacuum can't get high enough). or
>
> 3) pump is dying so can't get the vacuum high enough to turn the switch off.
>
> If you have a vacuum gauge as part of your system then have a look - brake
> vacuum in the range of -80 to -95kPa, (approx = -600 to -710mm mercury,
> approx = -23 to -27.5 inches mercury, should be adequate to turn the switch
> off. If you don't have a vacuum gauge it gets a lot harder to tell what is
> going on, as your vacuum can be down by half before you notice the added
> braking pedal effort needed.
>
> Find your vacuum pump (simple, since it is running) and follow its' supply
> wiring until you find a 'gadget' that has a tube/pipe/hose attached as well
> as the wiring. Follow the vacuum tube/pipe/hose to the vaccum system (you
> should have some kind of vacuum tank, but maybe not) looking for kinks,
> loose connections etc. If all looks well, I suggest getting a small mallet
> (large screwdriver handle will substitute) and give the vacuum switch a
> sharp tap (or two in different directions), and see if it turns off, if it
> does then it was welded shut.
>
> Whatever happens, please post a description of pump and switch (posting
> photos somewhere on-line and providing a link is an excelent way to help)
> and we will see what we can do to point you or your mechanic in the right
> direction to both fix the problem and make sure it is unlikely to come
> back. Brakes are too important to not have working right.
>
> Regards
>
> [Technik] James
>
> _______________________________________________
> General EVDL support: http://evdl.org/help/
> Usage guidelines: http://evdl.org/help/index.html#conv
> Archives: http://evdl.org/archive/
> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>

     
_________________________________________________________________
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Usage guidelines: http://evdl.org/help/index.html#conv
Archives: http://evdl.org/archive/
Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev

[Bob Rice-2]

----- Original Message -----
From: "Hazem Sedra" <[hidden email]>
To: <[hidden email]>
Sent: Saturday, October 31, 2009 8:43 PM
Subject: Re: [EVDL] Vacuum pump continously running

>
> Thanks so much James for taking the time to help me out
> and write your datailed note to guide me.
>
> After reading your note, I looked for the valve switch on the vacuum pump
> and
> found it.  I noticed the neck of the switch was broken off the valve
> assembly and is made
> of plastic.  I will simply buy a new one and connect it to the valve
> assembly.
>

    A Happy ending! Great! Happy motoring Hazem!

       Bob

>
> I appreciate your help and this forum.
>
> Hazem
>
>> Date: Sun, 1 Nov 2009 10:32:31 +1100
>> To: [hidden email]
>> From: [hidden email]
>> Subject: Re: [EVDL] Vacuum pump continously running
>>
>> At 09:54 AM 1/11/09, Hazem wrote:
>>
>> >I am a new to this group
>>
>> Welcome, you're in the right place for EV advice. Not the only place, but
>> one of the best, and if you like the 'list' format over a 'forum' format
>> then probably the best.
>>
>> ><snip> Today while driving I noticed that my vacuum pump was continously
>> >running
>> >when the car was on.
>>
>> This should be a simple fix, as it has to be one of the following things:
>>
>> 1) pump pressure switch failure (vacuum is high enough but the switch
>> won't
>> turn off) or
>>
>> 2) vacuum leak (vacuum can't get high enough). or
>>
>> 3) pump is dying so can't get the vacuum high enough to turn the switch
>> off.
>>
>> If you have a vacuum gauge as part of your system then have a look -
>> brake
>> vacuum in the range of -80 to -95kPa, (approx = -600 to -710mm mercury,
>> approx = -23 to -27.5 inches mercury, should be adequate to turn the
>> switch
>> off. If you don't have a vacuum gauge it gets a lot harder to tell what
>> is
>> going on, as your vacuum can be down by half before you notice the added
>> braking pedal effort needed.
>>
>> Find your vacuum pump (simple, since it is running) and follow its'
>> supply
>> wiring until you find a 'gadget' that has a tube/pipe/hose attached as
>> well
>> as the wiring. Follow the vacuum tube/pipe/hose to the vaccum system (you
>> should have some kind of vacuum tank, but maybe not) looking for kinks,
>> loose connections etc. If all looks well, I suggest getting a small
>> mallet
>> (large screwdriver handle will substitute) and give the vacuum switch a
>> sharp tap (or two in different directions), and see if it turns off, if
>> it
>> does then it was welded shut.
>>
>> Whatever happens, please post a description of pump and switch (posting
>> photos somewhere on-line and providing a link is an excelent way to help)
>> and we will see what we can do to point you or your mechanic in the right
>> direction to both fix the problem and make sure it is unlikely to come
>> back. Brakes are too important to not have working right.
>>
>> Regards
>>
>> [Technik] James
>>
>> _______________________________________________
>> General EVDL support: http://evdl.org/help/
>> Usage guidelines: http://evdl.org/help/index.html#conv
>> Archives: http://evdl.org/archive/
>> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>>
>
>
> _________________________________________________________________
> Windows 7: It works the way you want. Learn more.
> http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen2:102009
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> URL:
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> _______________________________________________
> General EVDL support: http://evdl.org/help/
> Usage guidelines: http://evdl.org/help/index.html#conv
> Archives: http://evdl.org/archive/
> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>

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Usage guidelines: http://evdl.org/help/index.html#conv
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