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Cruise Control Vacuum Pump Testing?

posted by  aleekat on  Sat Oct 17 15:57 CST 2020
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last visit: Fri Oct 24 13:19 CST 2014
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Anyone ever bench tested one? If so, how?
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Post Back. That's whats makes this forum work.








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Cruise Control Vacuum Pump Testing?

uid 55's pic
posted by  john sargent on  Mon Oct 19 17:03 CST 2020
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last visit: Wed Oct 22 09:07 CST 2014
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Yes, I have tested them. I got a three wire connector from a self serve scrap yard. One wire is ground (Y-R), the second wire (GN-Y) powers the vacuum pump, the third wire (OR) vents the vacuum system. Leaving the vacuum pump connected to the servo I connected the ground and powered the system. The rubber servo should collapse, pulling on the throttle. Disconnecting the power to the pump, the servo shouldn't move. Touching the power to the orange wire should vent the system and allow the servo to collapse, closing the throttle.

Please verify the colors used on your car before testing.
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john








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Cruise Control Vacuum Pump Testing?

posted by  sunapeelakers on  Thu Oct 22 10:54 CST 2020
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John - in this case, if you have a cruise control system that will accelerate as it should, but will not set, what could be the issue?







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