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PCM

What is a Powertrain Control Module and Why Is It So Critical?

Renee Goodenough
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New automobiles today are a world apart from what were laughingly called cars in the old days. The difference is very much like going from a biplane to a fighter jet, both in terms of performance and complexity. Modern vehicles are essentially smart cars, wired throughout with a network of sensors and microprocessors that take […]

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PCM

What To Do When PCMs Go Bad

Renee Goodenough
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Modern vehicles contain a stunning array of electronics. Sensors control everything from the way the automatic transmission shifts to the ratio of the fuel and air mixture hitting the combustion chamber. Each sensor takes continuous readings on the environmental factors that can affect the operation of the engine. The sensors’ corresponding control module adjusts parameters […]

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PCM

Check Engine Light On? That’s One Symptom of a Failing PCM

Renee Goodenough
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Modern cars and trucks are highly complex and carefully engineered marvels. Prior to the 1980s, if they lasted over 100,000 miles it was almost miraculous, to say nothing of the amazing safety and emissions improvements since then. Much of this is thanks to computerization, and one key component of vehicle computers is the powertrain control […]

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