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Genuine Jeep Liberty Knock Sensor
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4 Knock Sensors found
Jeep Liberty Knock Sensor
Jeep Liberty cars contain the Knock Sensor for the purpose of monitoring the knock in an engine which results from wrong ignition timing. This gadget transmits messages to the powertrain control module (PCM) so that the latter can change the ignition timing to prevent excessive detonation. Usually, Jeep Liberty models use piezoelectric knock sensors mounted to pick up the vibrations and translate them into electrical impulses to supply continuous pressure spike data associated with knocking. Through the years Jeep Liberty has used sophisticated knock sensor that can control the ignition timing per cylinder, giving the premier performance even when the fuel is of low octane rating. This system makes it possible to tune the engine in a way that it runs right on the edge of the 'knock point' which improves both the power output and durability of the engine. The provision of such mechanisms is an indication of development of the Jeep Liberty's engine management systems as it responds to different conditions.
Looking for affordable and high-quality auto parts? Then you have already arrived at the proper online shop. We offer all Jeep Liberty Knock Sensor at great affordable prices. Moreover, all genuine Jeep Liberty Knock Sensor come with a manufacturer's warranty. In the long run, you would realize you have saved a lot of trouble and money with OEM parts from here.
Jeep Liberty Knock Sensor Parts Questions & Experts Answers
- Q: Where Are the Knock Sensors Located on a Jeep Liberty?A: There are two knock sensors located underneath the intake manifold - one on the left side and one on the right side of the engine block. The sensors send voltage signals to the PCM based on the intensity of the vibrations inside the cylinders. When cylinder knock ("pinging") is detected, the PCM will respond by retarding the ignition timing for all of the cylinders. The left and right knock sensors are different. Disconnect the knock sensor electrical connector located near the rear of the left valve cover. Remove the intake manifold. Remove the knock sensor mounting bolts and remove the sensors. Thoroughly clean the bolts and bolt holes. Install the knock sensors and tighten the mounting bolts to 15 ft-lbs (20 Nm). Do not apply sealant to the bolts. It is important to properly torque the mounting bolts to ensure proper knock sensor operation and accurate ignition timing control. Installation is the reverse of removal. For 4.0L engines, the single knock sensor is located in the valley between the cylinder heads. Relieve the fuel system pressure and drain the cooling system. Disconnect the cable from the negative terminal of the battery. Remove the upper intake manifold and lower intake manifold. Disconnect the electrical connector from the knock sensor. Remove the mounting bolt and detach the sensor from the engine block. Install the sensor and tighten the knock sensor bolt to 84 in-lbs. The remainder of installation is the reverse of removal. Refill the cooling system.
