
2) Engine StallingĪlong with a weak engine performance, you could actually experience the engine misfiring or at least stalling a lot. If you notice any kind of acceleration issues, then it could be because of a bad engine control module. This will ultimately affect your ability to accelerate the vehicle as you step on the gas pedal. Your engine will start to have bad timing and it won’t get power as efficiently as it used to from the internal combustion process. 1) Bad Engine PerformanceĪ big symptom that you will notice from a bad engine control module is poor engine performance. Here are 5 common symptoms of a bad engine control unit in a vehicle. But it is important that you recognize these symptoms as they arise, so you can do something about it right away. If you have a bad ECM in your vehicle, the symptoms will become more than obvious. Top 5 Symptoms of a Bad Engine Control Module

Top 5 Symptoms of a Bad Engine Control Module.
