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It's commonly known as "Detonation or Knock". Engine management systems can overcome pre ignition by the means of a knock or detonation sensor. The sensor will detect pre ignition and retard the engines timing to protect the engine from damage. Undesired engine behavior will occur such as loss of performance or power.
In a collision in which two young women in a Chevrolet Cobalt were killed when the ignition switch shut off the engine, GM only counted the death of the woman in the front seat, because the death of the woman in the back seat was not caused by the failure of the airbag to deploy. [16] Most of the victims were under age 25. [17]
The federal investigation covers select Chevrolet, Cadillac, and GMC trucks and SUVs built with the 6.2-liter L87 V-8 between the 2019 and 2024 model years. Feds Investigating 877K GM SUVs ...
This sudden increase in pressure and temperature causes the distinctive diesel 'knock' or 'clatter', some of which must be allowed for in the engine design. [ citation needed ] Careful design of the injector pump, fuel injector, combustion chamber, piston crown and cylinder head can reduce knocking greatly, and modern engines using electronic ...
Common Firenza problems included brake failure and engine fires. [54] In 1972, angry Firenza owners formed the "Dissatisfied Firenza Owners Association" and engaged in public demonstrations to publicize the car's quality problems and demand compensation from General Motors for repair costs and depreciation.
Both of these cause significant degradation to traditionally constructed engines, posing both residue and corrosion issues in increasing proportion with increasing fractions of ethanol. Whereas age-degraded gasoline may simply polymerize, evaporate, and thus lose its flammability, age-degraded gasoline-ethanol blends can cause severe damage if ...
The Center for American Women and Politics (CAWP) is a unit of the Eagleton Institute of Politics at Rutgers, The State University of New Jersey. Established in 1971, it is nationally and internationally recognized as the leading source of scholarly research and current data about U.S. women's political participation.
The GM Instrument Cluster Settlement was a 2008 class action settlement awarded to owners of certain General Motors vehicles with allegedly defective speedometers.The settlement allows the owner or lessee to get their instrument cluster replaced under the terms of a special coverage adjustment to their factory standard warranty.