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The result is an engine that fails to maintain idle RPM and frequently stalls. A jammed actuator may be freed simply by cleaning it. However an actuator that has stopped working due to a fault in its servomotor will need replacement. Air leaks in either the stepper housing or pipes will cause elevated idle RPM.
Most air conditioning-equipped engines have an automatic adjustment feature in the carburetor or fuel injection system that raises the idle when the air conditioning is running. Engines modified for power at high engine speeds, such as auto racing engines, tend to have very rough (unstable) idle unless the idle speed is raised significantly.
How the car warm-up routine began The winter warm-up routine started decades ago when vehicles were more prone to stalling in frigid temperatures, according to Carfax.
A start-stop system off button on a Perodua Myvi. A vehicle start-stop system or stop-start system (also known as S&S, micro hybrid, or micro hybrid electric vehicle (μHEV)) [1] automatically shuts down and restarts the internal combustion engine to reduce the amount of time the engine spends idling, thereby reducing fuel consumption and emissions.
Engine fan with viscous drive. A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine.
A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density with temperature and pressure.
This led to Toyota sending a letter to the owners of the affected car, a 2007 Lexus ES 350, asking that they bring their cars in to switch out the all-weather mats. [47] After this recall, Toyota revised the internal design of its cars to ensure that there was 10 mm (0.39 in) "between a fully depressed gas pedal and the floor", but only ...
The ignition switch was designed to remove power from the vehicle's airbags when in the Off or Accessory mode. [11] Therefore, this was a safety hazard: If the switch changed from Run to Accessory and the vehicle was involved in an accident, it would no longer have power to release the airbags, and it would be difficult for the driver to steer ...