![]() Some of the symptoms that you may notice when you have a throttle body that has gone bad or one that is almost failing include a rough idle, an engine that struggles to accelerate, and a Check Engine Light that generates a throttle body trouble code. Throttle Body Failure Symptoms of a Bad Throttle Body The best option is to replace them together with the spark plugs and gasket. You’ll need to remove the intake plenum to access the ignition coils. They increase the voltage they receive from the battery to help create a spark that ignites the fuel and air mixture inside the engine. The ignition coils in the Nissan Sentra are located just underneath the intake plenum. When the ignition coils go bad, some of the symptoms that you’ll get include an engine that’s running rough and a check engine light that may be flashing. Ignition Coil Failure Symptoms of Bad Ignition Coils ![]() Top Issues 6th Gen Nissan Sentra (2007 to 2012) 1. ![]()
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