The engine control unit (ECU), also referred to as the engine control module (ECM), is an electronic module that controls the function of the engine. This is done through a series of electronic components and sensors which compute data back to the engine.
Based on what this data indicates, the engine will perform a specific function. If your vehicle has a bad engine control unit, then it can cause all kinds of problems with how the engine functions. As a result, it will impair your ability to operate your vehicle safely and effectively on the road.
Fortunately, there are certain symptoms that you can look out for early on to detect if your engine control unit is going bad.
#1 – Poor Engine Performance
Alternatively, a faulty ECM cannot even supply enough fuel to the combustion chamber. This means that when you step on the gas, your car is not as fast as before. Something can even shake and it can vibrate, especially when trying to climb hills, when the car weighs too much, or when you tie something. You may experience some frustration due to not getting enough fuel for the conditions.
#2 – Engine Misfires
Another sign that can light a warning light is an engine that is misused or perhaps even stalls. There really will be no consistency in these matters. The pattern of engine malfunctions and stalls will be random, making it difficult to identify specific engine problems. Often, this is because the engine control module is failing and it is feeding the engine some inaccurate information. If the problem gets worse, the engine’s performance will deteriorate.
#3 – Please Check Engine Light
The simplest sign is when the “check engine” warning light will light up on the dashboard. Of course, there are many possible reasons to turn on this warning light. But in cases where the engine control unit detects issues with its electronic components, circuits, and / or sensors, it will immediately turn on the check engine’s warning light. Sometimes the engine control unit will do this by mistake. To find out if the engine control unit really. Troubleshooting, you need to find specific trouble codes on your car computer. These codes will identify the root of the problem. Check with your own developer, owner’s manual, or various online resources for more information on troublesome codes.
#4 – Low and Bad Mileage
Because the vehicle requires the right proportion of air fuel to run smoothly, a bad ECM will not be able to understand how much fuel should be sent to the combustion chamber. This means that most of the fuel in the combustion process is sent to burn. As a result, your car will be richer and use more fuel than it needs. Not only will you have to budget more for fuel each month, but you will not like any environment.
#5 – engine Won’t Start
The worst sign is when your engine doesn’t start at all. It may be difficult to start at first but after that, it will never start again. This occurs after complete failure of the engine control unit and does not work at all. Once this happens, the engine does not have a computer system to control and guide its performance. Although you may still be able to crank the engine, it will not start because the computer is not giving it the important information it needs to perform its important tasks. Again, there may be other reasons why your engine may not start. If this sign is related to a failed engine control unit, the only correct way to know is to have it inspected by a certified auto.
Sometimes you may have a problem with the engine control unit which can be easily repaired. This will definitely save you a lot of money on a completely new unit. However, in most cases, the unit will have to be replaced. Only real-time repairs will be required if the computer only has configuration issues.