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The second generation Family 0 began production in November 2002. It is an updated version of the Family 0 engine and features TwinPort technology – twin intake ports with a choke closing one of the ports at low RPM, providing strong air swirl pattern for higher torque levels and better fuel economy.
The GM Family I is a straight-four piston engine that was developed by Opel, a former subsidiary of General Motors and now a subsidiary of PSA Group, to replace the Vauxhall OHV, Opel OHV and the smaller capacity Opel CIH engines for use on small to mid-range cars from Opel/Vauxhall.
The resulting five-character code, e.g. "U0158", can be looked up in a table of OBD-II DTCs to get an actual description of what it represents. Of note, whilst some blocks of DTC code ranges have generic meanings that apply to all vehicles and manufacturers, the meanings of others can vary per manufacturer or even model.
The Family II is a straight-4 piston engine that was originally developed by Opel in the 1970s, debuting in 1981. Available in a wide range of cubic capacities ranging from 1598 to 2405 cc, it simultaneously replaced the Opel CIH and Vauxhall Slant-4 engines, and was GM Europe's core mid-sized powerplant design for much of the 1980s, and provided the basis for the later Ecotec series of ...
The car, also known as the Type I, was a total redesign and given the new 12-4 name. It featured a longer six-light body based on the Vauxhall 10 but with a monocoque hull with independent torsion-bar front suspension and semi-elliptic leaf springs at the rear.
A Regular Production Option (RPO) is a 3-digit standardized code used by General Motors to designate vehicle options & modifications. RPO codes designate how a vehicle is built, and they've been used on dealership order forms and in assembly plants since at least the 1950s (see Corvette C1).
It was introduced in the Opel Vectra/Vauxhall Cavalier (both codenamed "Vectra-A") and Opel/Vauxhall Calibra. It features a Bosch Motronic 2.8.1 engine management system (Omega), with later examples featuring M2.8.3 (Calibra 1994, Vectra 1995) and a compression ratio of 10.8:1.
Vauxhall Motors Limited [note 2] is a British [6] car company headquartered in Chalton, Bedfordshire, England. Vauxhall became a subsidiary of Stellantis in January 2021, having previously been owned by General Motors since 1925. Vauxhall is one of the oldest established vehicle manufacturers and distribution companies in the United Kingdom.