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Home >> Toyota >> 1985 >> 4Runner Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Operation >> Cold Mixture Heater

Cold Mixture Heater

All models are equipped with a cold mixture heater. When coolant temperature is low, the ECU activates a heater in the intake manifold which warms the air/fuel mixture. This system promotes starting in cold weather.