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Old 07-22-2003, 09:51 AM
sbourg sbourg is offline
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Join Date: Jul 2001
Location: SoCal
Posts: 1,303
The valve should rotate if you apply voltage. It might click if it rotates to its stop. If you have cleaned it, then you have it out of the car, and can see the movement.

The rotation angle is proportional to the voltage applied - it is an analog device. To test it adequately, you should use a variable-voltage power supply off the car. This will show up sticky spots.

'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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