If you suspect they are ECM is bad, you may wish to have a mechanic take a look at it. The ECM is the most vital piece of hardware in your Aura. The transmission may have a hard time shifting, or not even be able to shift at all. A bad fuel pump, ignition problems, clogged fuel filter, bad mass airflow sensor, and bad crank/camshaft sensors are just a few of the problems that can cause an engine to not start. There are certainly many things that could cause an engine not to start though. If the engine is failing to start entirely that can be a symptom of a bad ECM. This could lead to poor fuel economy, the previously mentioned rough running engine, backfiring, a flashing check engine light, and an engine that has no giddy-up and go. So, when it goes bad, it can knock your Aura’s air fuel ratio off. Poor PerformanceĪs mentioned above, the ECM controls the engine timing, and air/fuel ratio. It may stall, and not be able to start again, until you turn the ignition all the way off and back on again. The misfire can come or go depending on what is going on with the ECM. Rough Running EngineĪn engine with a bad ECM will often run rough and misfire. Almost none of them have to do with the ECM. Now, the check engine light can turn on for a lot of reasons. This trouble code will tell you what part of the diagnostic that it failed, and you’ll have a pretty good idea of the appropriate action to take to fix it. If it fails the cycle, you’ll get a check engine light. When you start your Aura, the ECM will do a self diagnostic cycle. Here are some of the most common things that happen when your Aura’s ECM is bad. Make sure that you’re checking for trouble codes and doing what you can to make sure it’s not any of the more common causes of these problems before you jump straight to the ECM. While we’ve listed some of the most common symptoms of a bad ECM below, it’s not the primary cause for any of these. You very well get one such as P0606 (processor fault).īad ECM Symptoms: Saturn Aura A typical ECMĭue to the immense power that the ECM has over your engine, there can be a lot of different symptoms when it goes bad. Your Aura does run self diagnostic checks, so it is worth it to check if there is any error code related to the ECM/PCM currently stored. When the ECM it self goes bad it can be extra challenging to determine that it is at fault. One of the problems with diagnosing the ECM, is that you depend on it to provide you with all the diagnostic data that you need to repair the engine, or engine sensors. While modern engines are more complicated than older engines, this data more than evens out the advantage of the older engine. Other than the many performance advantages of an ECM over mechanically controlled engines, it also provides data that can help you diagnose what is wrong with the engine when there is a problem. It’s so vital to the operation of your Aura that it won’t run without one. It uses the data from the oxygen sensors, camshaft sensor(s), mass airflow sensor, knock sensors, and much much more to make constant adjustments to the engine. The ECM takes all of the data from the various sensors, and uses it to operate the engine in a way that is significantly more efficient than traditionally controlled engines. Almost all of the essential functions of the vehicle are controlled by the ECU/ECM. Always protect yourself with safety glasses and gloves when working with the coolant on your Aura.The ECM is your Aura’s main computer. An anti-freeze leak can cause the temp sensor to record high engine temperatures in a 2008 Saturn Aura. If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. This video shows you where the coolant reservoir, hoses and connections on your 2008 Aura XE are located and the steps needed to fix minor leaks.Ī few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. Otherwise, your Aura may have a radiator leak. However, a coolant leak (aka an antifreeze leak) is most likely to occur where the hoses connect to the engine or radiator. Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2008 Aura with the 3.5 liter engine. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your Aura engine and keeps it from overheating. Leaking coolant / antifreeze is one of the more common types of leaking fluid from Aura engines. Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2008 Saturn Aura.
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