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Home >> Mercedes Benz >> 1992 >> 300TE Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 3.0L >> Computerized Engine Controls >> Cis-E System >> Deceleration Control

Deceleration Control

When decelerating and transmission is in higher gears, throttle position switch is closed and manifold vacuum is high. CIS-E control unit senses a coasting deceleration mode and fuel cut-off solenoid is activated to cut fuel flow to injectors. Fuel flow returns to injectors when transmission downshifts into lower gears and RPM switch signals CIS-E control unit to resume fuel injection.

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