How Do You Replace A Nissan Xterra Knock Sensor?
The knock sensor in a Nissan Xterra performs a critical job. It “listens” to your engine to make sure that the engine is firing properly. If too much fuel gets into the engine, the compression is high enough, and the timing of the spark plugs is not precise enough, the pistons inside the engine can literally bang against the cylinder walls of the engine. This is called engine knock, and it can quickly cause catastrophic engine failure in your Xterra. When the knock sensor in your Xterra fails, you’ll notice a marked decrease in fuel economy as the engine tries to retard ignition timing enough so that the engine “runs rich” (burns a lot of fuel). This will ensure that the engine does not suffer from knocking, but it also hampers fuel economy as well as engine performance. Step 1 Remove the bolt securing the knock sensor. The knock sensor is mounted behind the intake manifold on your engine, near the firewall. This is the hardest part about changing the sensor because it’s a difficult lo
