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  Soarer Central * Brakes * TRC braking system wiring diagram Pump runs all the time Previous Previous    Next Next  

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Mick Arnett
Tinkerer
Queensland
SC400

Posts: 23
Reg: 02-2011

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Friday, September 09, 2011 - 10:13 am, by:  Mick Arnett (Barney318) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I have a uzz31 that i am doing up and the electric brake booster pump runs all the time even with the ignition off .
If the pressure is low is it normal for the pump to operate with the ignition off
The master cylinder , accumulator and all other parts look like new but the pump won't stop
I have bled the system with no change
Can someone please tell me where i can get a wiring diagram from for the brake system .
Thanks
Mick
Dave Rose
Goo Roo
wa
uzz31 v8

Posts: 1687
Reg: 03-2007

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Friday, September 09, 2011 - 10:54 pm, by:  Dave Rose (Sand_groper) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Mick, sounds like the pump relay has stuck in (should not run with ign off),the points inside can get welded together if the pumps been running all the time(with ign on),the cause is the accumulator has run low on gas.
Have a search in SC for more info.
Mick Arnett
Tinkerer
Queensland
SC400

Posts: 26
Reg: 02-2011

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Wednesday, September 28, 2011 - 03:41 am, by:  Mick Arnett (Barney318) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Finally got around to having a look
Thanks Dave %100 correct the relay contacts were welded together
Dave Rose
Goo Roo
wa
uzz31 v8

Posts: 1699
Reg: 03-2007

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Wednesday, September 28, 2011 - 07:05 pm, by:  Dave Rose (Sand_groper) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Glad its all sorted, does it run every few seconds now?
Mick Arnett
Tinkerer
Queensland
SC400

Posts: 27
Reg: 02-2011

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Friday, September 30, 2011 - 05:07 pm, by:  Mick Arnett (Barney318) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Runs for around 15 seconds when key first turned on then it only runs for around 10 sec after pumping the brake pedal 4 to 5 times
Everything looks new
Guessing it has all been replaced but previous owner didn't find welded relay

thanks again
Dave Rose
Goo Roo
wa
uzz31 v8

Posts: 1700
Reg: 03-2007

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Saturday, October 01, 2011 - 09:10 am, by:  Dave Rose (Sand_groper) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yes, thats as new specs.

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