How To Determine the PCM Problems in your Porsche by Charleston Mechanic

Now modern cars have a highly advanced computer system for controlling all the aspects of the drivetrain.

Moreover, it has a Powertrain control module (PCM) to handle the functions of the different components.

IfthePCMofthePorscheisfailed,then theengineperformanceisreduced, andactivatesthecheckenginelight.

Besides all, the failed PCM also causes shifting issues and increases the emission production in the car.

When the PCM of your Porsche is failed, determine the problem earlier by going through the following signs.

Random or erratic shifting

When the PCM of the car is failed, you will experience random or irregular shifting while driving.

Moreover, these problems are mostly arising due to the failed sensor or damaged circuits in the PCM.

FAILED EMISSION TEST

PCM in your car is controlling the air/fuel ratio in the cylinders for the smooth combustion process.

If it is failed, then the engine is running through a high air/fuel mixture that can cause:

Lower combustion rate

Produce more carbon monoxide

PCM in your car is controlling the air-tofuel ratio of the engine

and is helpful for smooth gear shifting.

When it stops functioning, the gas mileage of your car is decreased due to the flow of excess amount of fuel to the engine.

Engine sputtering or stalling

A mechanical problem within the PCM is causing engine sputtering or stalling problems in your Porsche.

It generally happens when the failed PCM is unable to get the engine timing for controlling the engine functions.

If you found that the PCM of your Porsche is not functioning, check out the shorted wires of the PCM.

Whenever you will notice any early signs of bad PCM in your car, try to fix the problem before it may lead to a bigger issue.