3VZ-FE hydraulic pump speed - Toyota Nation Forum : Toyota Car and Truck Forums


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Old 09-04-2008, 01:27 PM   #1 (permalink)
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3rd Generation 3VZ-FE hydraulic pump speed

When cold the hydraulic fan turns slowly
When hot the hydraulic fan turns faster (at the default speed 1100rpm)

But, when I press on the gas pedal, the speed does not change. Should the speed of the fan change when I press on the gas pedal?

Thanks

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Old 09-04-2008, 01:42 PM   #2 (permalink)
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No, it change with temperature, and when the A/C is on and pressure is too high in the A/C system.

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Old 09-04-2008, 04:00 PM   #3 (permalink)
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^ what he said

the ecu controls the hydraulic fan speed via the power steering pump, using signals from the ect
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Old 09-04-2008, 06:33 PM   #4 (permalink)
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My hydraulic fan runs faster when the gas is pressed, whether the engine is cold or hot.
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