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Discussion Starter #1
When the motor is on and I'm turning my steering-wheel the rpm's go fir a very short time higher by about 400 rpm's.
This is only when the car isn't driving.
Is this normal?
 

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Power steering is achieved by a hydraulic pump, and hydraulic pumps can draw a fair amount of power when in use (i.e. when you're turning the wheel.) A so-called "PSPS" - power steering pressure switch - tells the engine control computer that the power steering pressure is above a certain level (as when, say, you are turning the wheel) and the control module will increase the idle RPM a bit to compensate for the additional load to help prevent the engine stumbling or stalling under the load.

In other words, it's normal. 400 sounds a bit high, but an increase in RPM is normal.
 

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Discussion Starter #3
Thanks for your explanation, it's clear for me now.
I take a look at the increase of the rpm's and it's around the 300 rpm's.
So you're rigth that 400 is too much.
 
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