MINI2

neogeo · Feb 13th, 2006, 01:36 PM

got problem with my mini 2002 cooper when i turn the steering side to side the idling drops , anybody know y

MINI-Morgan · Feb 13th, 2006, 01:39 PM

Thats normal isnt it?? to move the steering when stopped especially it requires quite a bit of hydrolic pressure created by the power steering pump.

GR33NIE · Feb 13th, 2006, 01:50 PM

Yep think thats normal, pretty sure the same happens on my one

twouptons · Feb 15th, 2006, 04:30 PM

Our car does that too, but I thought part of the point behind having an electric power steering pump was that it wouldn't impact the engine as much as a mechanically driven one.

A bit annoying, really.

-Eric

Wobert · Feb 15th, 2006, 05:08 PM

The power steering runs at c1000psi, so as you can imagine that loads the electrical system up slightly......

In the good old days of an engine driven p/s pump, the pump would draw something like 2-3 hp all the time the engine was running.

With most new cars now using an electrically driven pump, the pump is only driven when there is "high steering demand". By doing so alleviates the "drain" of the pump when the p/s is lightly loaded, eg driving along the motorway.

This in turn improves your fuel economy......

The downside with the electric system is that the motor will draw load at high demand times, and as you'll probably guess, with the engine at idle speed, turning lock to lock is one of those times!

BTW turning the wheels with the vehicle stationary is bad practice, you'll wear your tyres a lot more quickly, than turning the wheel with just a small amount of forward / rear motion!

Feb 13th, 2006, 01:36 PM	#1
neogeo MINI2 Newbie Join Date: Feb 2006 Local Time: 09:29 PM Posts: 1 Offline	idling problem got problem with my mini 2002 cooper when i turn the steering side to side the idling drops , anybody know y

Feb 13th, 2006, 01:39 PM	#2 (permalink)
MINI-Morgan MINI Obsessed... My Classifieds Join Date: Nov 2003 Location: Southampton, Hants Local Time: 09:29 PM Posts: 4,679 Offline	Thats normal isnt it?? to move the steering when stopped especially it requires quite a bit of hydrolic pressure created by the power steering pump. One Man, One Project......find out what happens next at MINIProject.co.uk For MINIs in the south it can only be South Coast New MINI Club

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Feb 13th, 2006, 01:50 PM	#3 (permalink)
GR33NIE Polo GT Owner! Join Date: Aug 2004 Location: Oxfordshire Local Time: 09:29 PM Posts: 3,860 Offline	Yep think thats normal, pretty sure the same happens on my one

Feb 15th, 2006, 04:30 PM	#4 (permalink)
twouptons What's this button do? Join Date: Jul 2004 Location: Our Own Little World Local Time: 04:29 PM Posts: 569 Offline	Our car does that too, but I thought part of the point behind having an electric power steering pump was that it wouldn't impact the engine as much as a mechanically driven one. A bit annoying, really. -Eric

Feb 15th, 2006, 05:08 PM	#5 (permalink)
Wobert Mr 120d Sport Join Date: Nov 2002 Location: Chester, UK Local Time: 09:29 PM Posts: 4,539 Offline	The power steering runs at c1000psi, so as you can imagine that loads the electrical system up slightly...... In the good old days of an engine driven p/s pump, the pump would draw something like 2-3 hp all the time the engine was running. With most new cars now using an electrically driven pump, the pump is only driven when there is "high steering demand". By doing so alleviates the "drain" of the pump when the p/s is lightly loaded, eg driving along the motorway. This in turn improves your fuel economy...... The downside with the electric system is that the motor will draw load at high demand times, and as you'll probably guess, with the engine at idle speed, turning lock to lock is one of those times! BTW turning the wheels with the vehicle stationary is bad practice, you'll wear your tyres a lot more quickly, than turning the wheel with just a small amount of forward / rear motion!

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