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A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). [4]
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The engine oil pump cannot generate enough pressure to cause "pump-up". The problem is due to weak valve springs which permit float at high engine speeds. The followers attempt to take up what they see as extra clearance. As this speed is maintained, the lifter will continue to expand until the valve is held off its seat when it should be closed.
Cadillac Eldorado cold start. A cold start is an attempt to start a vehicle's engine when ambient temperatures are much lower than its normal operating temperature. [1] A cold start can be difficult for an engine due to higher viscosity of oil and fuel in cold temperatures.
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A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.
The freeze-frames showed the parking brake, open-door, and seat belt warning lights on while the car was allegedly "accelerating" to 6,000 RPM, indicating that the car was actually not moving. [211] Media blog Gawker.com posted the photos and stated, "the tachometer footage is faked". [ 211 ]
The most prominent incidents of sudden unintended acceleration took place from 2000–2010 in Toyota and Lexus vehicles, resulting in up to 89 deaths and 52 injuries in the USA. [4] The NHTSA first opened an auto defect investigation into Toyota vehicles in 2004, but the Office of Defects Investigation (ODI) within the NHTSA closed the ...