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Most professional scan tools require a large database of vehicle definitions. [ 5 ] The signaling of ALDL is similar to the RS-232 serial data standard; differing in the voltages used to denote logical one (usually 0 V DC) and logical zero (either +5 V DC or +12 V DC), and that unlike RS-232, both transmit and receive functions are on the same ...
It was used on all GM vehicles, at least in the North American market, from 1975 through the mid-1980s. [vague] The system is an electronic system that requires no scheduled maintenance, provides up to 35,000 volts to fire the spark plugs and increase spark plug life, especially when unleaded fuel is used. The HEI system has 40% more voltage ...
In 1988 Vauxhall's twin-camshaft version of the engine, the C20XE known as the "red top" (due to the red spark plug cover), was fitted to the GTE and instantly created a stir with the motoring press because of its performance. In fact the C20XE is a Cosworth designed twin-cam conversion of the GM Family II engine, also called the Cosworth KBA. [10]
The torque, or rotational power that prevents the ignition switch from changing modes, was required by GM's own standards to be between 10 N·cm and 20 N·cm (Newton centimeters). However, it was less than 10 N·cm, a force so little that made it prone to changes in modes which could potentially shut off the engine. [11]
Spark plug with single side electrode An electric spark on the spark plug. A spark plug (sometimes, in British English, a sparking plug, [1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within ...
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ACDelco is an American automotive parts brand owned by General Motors (manufactured by GM are consolidated under the ACDelco brand, which also offers aftermarket parts for non-GM vehicles. Over its long history it has been known by various names such as United Motors Corporation , United Motors Service , and United Delco .