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  • Nissan YD engine

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    YD25DDTi in 1998 Nissan Presage The YD engine is a 2.2 L & 2.5 L I4 diesel engine from Nissan. It has a cast-iron block and aluminium head with chain driven DOHC.

  • Powertrain control module

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    A PCM from a 1996 Chevrolet Beretta. A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined control unit, consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the Transmission Control Unit, and the Body Control Module, for a total of three separate computers as an example. These automotive computers are generally very reliable. The PCM commonly controls more than 100 factors in a car or truck. There are many hundreds of error codes that can occur, which indicates that some subsection of the car is experiencing a problem. When one of these errors occurs, usually it will turn on the "check engine" light on the dashboard. The PCM is one of potentially several on-board computers, or essentially the "brain" of the engine control system. The primary inputs to the PCM come from many sensors, of different types, that are spread around the car. Most of them are oriented toward engine management and performance. These sensors fail at a much higher rate than any of the computers do. Early use of the powertrain control module dates back to the late 1970s - official phasing in of the PCM occurred during the early 1980s when used in conjunction with electronic controlled carburetors and lockup torque converters (at the time conventional 3-speed automatics received lockup converters at the same time overdrives were introduced).

  • Nissan Maxima

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    The Nissan Maxima is a mid-size car manufactured by Nissan and sold primarily in North America, the Middle East, and China. Making its sales debut in 1981 for the 1982 model year as the Datsun Maxima, it replaced the earlier Datsun 810. The name "Maxima" dates back to 1980 for the 1981 model year when the upscale 810 sold as the "810 Maxima" in North America. Like the 810, early versions of the Maxima had their origins in the Datsun/Nissan Bluebird. The Datsun brand was phased out in favor of Nissan in 1984 for the 1985 model year, thus becoming the Nissan Maxima. Most Maximas were built in Oppama, Japan, until the current North American Maximas started being assembled in Smyrna, Tennessee beginning with the 2004 model year. In some markets beyond North America, the "Maxima" name has also been applied to the Nissan Cefiro and Teana (see below).__TOC__

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