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Author Topic: weird backwards pumping  (Read 2136 times)

Offline willz94

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weird backwards pumping
« on: 21 June 2012, 22:39 »
my vr6 screenwash pumps backwards where i turn the key to unlock the doors, pumps backwards for about 5 mins, any ideas why?
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Offline Screech16v

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Re: weird backwards pumping
« Reply #1 on: 21 June 2012, 22:54 »
More likley to be your central locking pump,you possibly have an air leak on the system,where is the noise coming from front/back? screen wash pump is under the bonnet locking pump is in the boot.
VR6 also has an electric aux water pump which carries on circulating water around the engine after you switch off ,it could be this  :smiley:
« Last Edit: 21 June 2012, 22:57 by Screech16v »
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Offline willz94

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Re: weird backwards pumping
« Reply #2 on: 21 June 2012, 23:02 »
well recently had to change the central locking pump because a tool but the battery on backwards and it fried EVERYTHING, it never used to bump backwards however, i have changed the tailgate so possibly a air leek making it happen?, its defo from the screen wash under the bonnet ive watched it pump backwards fro about 5 mins straite after turning the key in door lock lol was confusedd
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Offline thai-wronghorse

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Re: weird backwards pumping
« Reply #3 on: 22 June 2012, 09:46 »
Oh dear, massive tool indeed. What needed replacing after that epic fvck up?
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Offline stainesy

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Re: weird backwards pumping
« Reply #4 on: 22 June 2012, 09:51 »
probly gona sound really stupid but could the fact that the hole electric system having power and current reversed could it have somehow reversed the motor in the pump somehow making it now go the other way?

just a thought  :grin:
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Offline thai-wronghorse

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Re: weird backwards pumping
« Reply #5 on: 22 June 2012, 10:00 »
It does sound as if the polarity as been flipped.
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Offline stainesy

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Re: weird backwards pumping
« Reply #6 on: 22 June 2012, 10:20 »
Quote from: thai-wronghorse on 22 June 2012, 10:00
It does sound as if the polarity as been flipped.

yeah that the easy way to say it  :grin:
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Offline willz94

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Re: weird backwards pumping
« Reply #7 on: 22 June 2012, 15:39 »
Never let a apprentice put a battery on a car with no supervision ...
I had to get a new ecu, central locking pump, window regulators for both sides and a replacement board for the immobilizer, alot of money for something i could have prevented by doing it myself

As for the pumping, it only does it when i turn the key to unlock the doors though and then it stops after a while and the screen wash works fine then, just seems strange and when i go to sell it they will open the door and be like WHAT the f**k lol, i unplug the plug going to it and it still happens :s is there a second plug?
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Offline willz94

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Re: weird backwards pumping
« Reply #8 on: 22 June 2012, 15:40 »
oh and i forgot to mention the ecu that was fried had a really good/expensive map on it!
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Offline stainesy

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Re: weird backwards pumping
« Reply #9 on: 22 June 2012, 18:02 »
How do you no it's pumping backwards mate?
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