Question about 2004 Mini Cooper

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2003 Mini Cooper S Power Steering Runs constantly with key off.

I am working in a customer's 2003 Mini Cooper S (3-03 production). The power steering pump runs constantly, even with the key off (the cooling fan does not). I even unpluged the small plug with the 3 control wires and it was still on. The wiring diagrams I have are not that good but it seems to show a control transistor but does not show a set of contacts in the pump to power the motor. I am assuming there is a set of contacts or a power diode in there that have frozen shut. Is this a correct conclusion? Can the control section be replaced or does the pump assy need to be replaced as a unit?

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The pump is also a computer may need a new pump

Posted on Jul 21, 2009

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1 Answer

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http://newmini.wordpress.com/2009/02/17/mini-cooper-power-steering-failure/#comment-884

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A constant whizzing


that whining noise is definately your power steering pump. the earlier models eg 2001-2003 just have noisy ones. so they say, if that noise become really excessive; its an early warning that its gonna fail. the newer pumps are much quiter, but i was quoted approx 1200+ CND for a new pump. I have a 2003 cooper, and the whining noise is loud. only once has the steering been really stiff, but i resolve that problem by restarting the vehicle. watch out tho, the power sttering could fail on you while your driving around a corner, and if you dont have both hands on the wheel, you'll go strait.

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