What are the symptoms of a bad ECM?
What are the symptoms of a bad ECM? Erratic engine behavior may also indicate a bad or failing ECM. A faulty computer may cause the vehicle to intermittently stall or misfire. The symptoms might come and go and not appear to have any sort of pattern to their frequency or severity. Why does my car have a single PCM? The reason is your car’s computer system. These systems are primarily controlled by a single computer: the powertrain control module (PCM). This controls the engine control module (ECM) and the transmission control module (TCM). What are the symptoms of a bad...