After-start, Warm-up and Cold Acceleration Enrichment
To ensure smooth running, the system supplies additional fuel to a cold engine by increasing differential pressure regulator current for a short period after starting and during warm-up. The coolant temperature sensor provides the control unit with temperature input. To ensure good throttle response when the engine is cold, the system also briefly delivers additional fuel when the throttle valve is opened suddenly.
Disconnect oxygen sensor harness connector (four-terminal connector on right engine mount).