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The 97+ rams use the power steering pump and a hydraulic (instead of a vacuum) brake booster. Where does the truck get vacuum for AC, Cruise Control, etc?

April 26, 2017booster Brake hydraulic power pump rams steering vacuum

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The 97+ rams use the power steering pump and a hydraulic (instead of a vacuum) brake booster. Where does the truck get vacuum for AC, Cruise Control, etc?

1 Answer

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• There is a small vacuum pump mounted in front of the power steering pump. • The ISB uses the engine computer to electronically control the injector pump for cruise control.