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Engineering, 27.04.2021 04:10 thutch1950oww9q0

Technician A says that manually opening an exhaust gas recirculation (EGR) valve with a vacuum pump or scan tool will cause the engine to idle roughly or stall. Technician B says that blocking the EGR valve passages will have no effect on the OBD-II. Who is correct?

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Technician A says that manually opening an exhaust gas recirculation (EGR) valve with a vacuum pump...
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