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Functions of Electronic Control Module in the Chevy 350 Engine

Most Chevy 350 engine operations, these days, are controlled by a computer or ECM - Electronic Control Module. Efficient running of the engine was the main objective behind the installation of this unit.

Obviously, it is not easy to achieve this target due to the rigorous emission regulations. Various factors like engine temperature, ambient air temperature, speed and so many others affect your Chevy 350 engine. That is why; there use to be a dire need of adjusting your Chevy 350 engine constantly and accurately.

All necessary inputs are provided to the ECM by a number of sensors. These inputs allow the ECM act accordingly to make initial adjustments such as, the addition or subtraction of fuel. According to the feedback from the oxygen sensor, fitted in the exhaust prior to catalytic converter, the ECM adjusts the air-fuel mixture to minimize emissions.

Apart from the oxygen censor that is fitted after the catalytic converter, there are also some other emission controllers that are controlled by the ECM. The ECM is capable of testing its all sensors and other components. If any of its signal is missing or beyond the normal range, the "Check Engine" or Service Engine Soon" light would illuminate itself due to ECM.

This process is repeated if any of mechanical components of controlling system fails. Even a loose gas cap is enough to light up the "check engine." The technician can recover the stored trouble code with the help of special scan tool.

It will not provide you with the exact information about the place to be replaced, but will only inform about the place to be looked for. The technician is needed to do some tests that are particular for each code to know the root cause of the problem.

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