The thermostat, radiator nipple, cooling system filler neck and overflow nipple are combined in a single unit. Sequential injection improves throttle response and overall driveability compared to single-point injection. The returnless fuel injection system, which is similar to that on the 2.0-liter engine, is less complex than customary systems. PCV To minimize oil pullover at high rpm, the crankcase ventilation system includes an oil separator in the cylinder head cover. The separator has baffles that inhibit the flow of oil to the intake manifold.
Oil drains out of the baffling on a long, narrow plate pinned to the inside of the cover.
The PCM determines idle speed. It actuates a stepper motor and valve in the throttle body to change idle air flow. An idle speed control sensor has been added to signal loads from the power-steering system. A switch on the power steering high pressure hose detects an increase in hydraulic pressure from steering action and increases idle speed when the steering wheel is turned. We are not affiliated with DaimlerChrysler.