Can be identified by the use of a resistor pellet on the ignition switch key. Depending on the year of your particular make/model, your vehicle may be equipped with: The vehicles covered by this tutorial have a passive theft deterrent system that is an integral part of the PCM or body control module (BCM).Although rare, internal engine mechanical problems can and do cause no start conditions.The engine pistons and cylinder head valves (and all the other related components like: timing belts, etc.) are the ones responsible for the induction of the fresh air the engine needs for the combustion process.Thankfully, the fuel pump can be tested with a fuel pressure gauge to make sure it has really fried.When the fuel pump fails, it will cause a no start condition.The electric fuel pump (located in the fuel tank) is the key component that supplies the fuel the fuel injectors need to inject gasoline into the cylinders.All of the above ignition system components can be tested in a methodical way to find out exactly what has failed (if indeed something has).In my experience, the most common component failures, of the ignition system that cause a no start no spark condition are:.More specifically, it uses a coil pack type ignition system. The ignition system of the GM 3.1L, 3.4L equipped vehicles covered by this article use a distributor-less ignition system.Without spark, the engine will crank but not start. The ignition system is the one responsible for creating and delivering spark.The or the ignition system is the one tasked with creating and delivering spark. The fuel system is the one responsible for supplying the fuel (which in our case is gasoline). To explain this a little further in very simple terms: The engine (internal mechanical) is the one responsible for the ‘air’ part. When one of the above is missing, the engine in your car or mini-van cranks but does not start. One of the most important pieces of info you need to know, about what makes the engine in your car start and run, is that it needs 3 specific things when it's cranking.
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How To Test The Starter Motor (GM 3.1L, 3.4L).The following tutorials may be good starting points: If your vehicle is suffering a no crank condition, there's a good chance that it could be due to a low battery issue (due to a bad alternator) or a bad starter motor. This is usually due to a bad starter motor, bad ignition switch, bad neutral safety switch, or maybe the engine threw a rod and is locked up. In other words: your vehicle's starter motor is cranking the engine but the engine is not starting.Ī no crank condition means that the engine is not cranking when you turn the key to crank the engine. In a no start condition your engine does turn over when you turn the ignition key to start but the engine doesn't start. It's important to know that a no crank and a no start condition are not the same thing. You can find this tutorial in Spanish here: Cómo Probar Un Arranca Pero No Prende (GM 3.1L, 3.4L) (at: ). No Start 4: Checking Engine Mechanical Condition.
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