Knock Sensor: Installing

WARNING: This page is about a different car, the 2014 Volkswagen Routan, 2013 Volkswagen Routan, 2012 Volkswagen Routan, and 2011 Volkswagen Routan. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The forward sensor (1) is known to the powertrain control module (PCM) as knock sensor 1. The rear sensor (3) is known to the PCM as knock sensor 2.

-- Thoroughly clean the knock sensor mounting holes.

Fig 1: Identifying Knock Sensors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly causing improper spark control. Always use the specified torque when installing the knock sensors. The torque specification for the knock sensor bolt is less than the typical 8 mm bolt.

NOTE:

There may be a foam strip on the bolt threads. This foam is used only to retain the bolts to the sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.

-- Install knock sensor 1 (1) or knock sensor 2 (3) with mounting bolt (2). Tighten the mounting bolt to 22 Nm (16 ft. lbs.).

-- Connect the electrical connector (4).

-- Install the oil filter housing, upper and lower intake manifolds and air cleaner housing assembly. Refer to UPPER INTAKE MANIFOLD .

-- If removed, install the oil filter and fill the engine crankcase with the proper oil to the correct level. Refer to OIL FILTER .

-- Connect the negative battery cable. Refer to Battery, Disconnecting And Connecting .

-- Fill the cooling system. Refer to COOLING SYSTEM DRAINING AND FILLING .

-- Operate the engine until it reaches normal operating temperature. Check cooling system for correct fluid level.