Knock sensor replacement and location?

Tiny
VLADO
  • MEMBER
  • 2001 BUICK REGAL
  • 180,000 MILES
How to replace knock sensor, engine 3.8 V6
Thursday, August 16th, 2012 AT 11:41 PM

2 Replies

Tiny
IMPALASS
  • MECHANIC
  • 3,112 POSTS
Bank 1 It is on the left side of the engine above the starter and Bank 2 is the lower right side of engine, below exhaust manifold. Locate the sensor, disconnect the electrical plug. Remove using a socket or wrench and install the new putting anti seize on threads only then connect electrical plug. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Friday, August 17th, 2012 AT 12:42 AM
Tiny
WRENCHTECH
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https://www.2carpros.com/images/external/58841080.gif

REMOVE OR DISCONNECT

CAUTION : Engine coolant may be hot. Although cooling system has been drained, coolant still remains in engine water jacket. This coolant will drain when knock sensor is removed.

1. Disconnect the negative battery cable.
2. Raise the vehicle.
3. Remove the splash shield.
4. Drain the cooling system.
5. Remove the knock sensor heat shield mounting bolt located under the freeze plug (or block heater if equipped).
6. Disconnect the knock sensor wiring harness connector from the knock sensor.
7. Remove the knock sensor from the engine block.

INSTALL OR CONNECT

CAUTION : Do Not apply thread sealant to sensor threads. The sensor is coated at factory and applying additional sealant will affect the sensors ability to detect detonation.

1. Install the knock sensor into the engine block.

Tighten
Knock sensor to 19 Nm (14 lb. ft.) .

2. Install the knock sensor heat shield mounting bolt located under the freeze plug (or block heater if equipped).
3. Connect the knock sensor wiring harness connector to the knock sensor.
4. Install the splash shield.
5. Lower the vehicle.
6. Fill the cooling system.
7. Connect the negative battery cable.

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Thursday, May 23rd, 2019 AT 2:33 PM (Merged)

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