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Normal or bizarre? Revs increase when steering wheel is turned

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Old 12-07-2006, 06:00 AM
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Normal or bizarre? Revs increase when steering wheel is turned
Lately, I've noticed that when I turn my wheels while stopped, the engine revs, like from 750 to 1,100RPMs.

Why does it do that?
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Old 12-07-2006, 06:11 AM
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The power steering pump does that.
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Old 12-07-2006, 06:12 AM
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Because it takes a ton of power to overcome the static friction that tires have (w00t physics) when 3000 pounds of metal is pushing them against the ground.
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Old 12-07-2006, 11:00 AM
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normally i would say this is perfectly normal, BUT 1100rpm WTF!? It's only supposed to increase the rpms by maybe 100-200rpms at most.
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Old 12-07-2006, 11:09 AM
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I should add that the surge only occurs when the wheel comes almost to the end of the turning circle on either side.
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Old 12-07-2006, 11:15 AM
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lol you should have started of with that...TOTALLY NORMAL! Technically this should happen on every single car with power steering.
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Old 12-07-2006, 04:56 PM
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Originally Posted by Wassup2114
Because it takes a ton of power to overcome the static friction that tires have (w00t physics) when 3000 pounds of metal is pushing them against the ground.
Thats bad physics because it's still static friction when the car's rollin. Only in a skid does it become kenetic friction, still static friction of rubber on pavement is 1.0 and kenetic is .9.. not much difference. Also it's only 60% of that 3100 lbs. on the front wheels.
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Old 12-07-2006, 05:00 PM
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Originally Posted by Dubbya
The power steering pump does that.
It's actually the IACV that does it to compensate for the higher load on the power steering pump.
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Old 12-07-2006, 05:14 PM
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Originally Posted by 96i30azn
Thats bad physics because it's still static friction when the car's rollin. Only in a skid does it become kenetic friction, still static friction of rubber on pavement is 1.0 and kenetic is .9.. not much difference. Also it's only 60% of that 3100 lbs. on the front wheels.
Well I never got very good grades in physics.
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Old 12-07-2006, 08:56 PM
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totally NORMAL cuz if it doesnt ur motor is gonna stall. PERIOD
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Old 12-07-2006, 09:07 PM
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Originally Posted by gmax96
totally NORMAL cuz if it doesnt ur motor is gonna stall. PERIOD
Not quite. The motor won't necessarily stall, but the revs will drop.
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Old 12-07-2006, 09:09 PM
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nismology nailed it..... same thing kinda happens when you turn on your ac
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