How to service the Knock Sensor (KS) on Mercury Grand Marquis?

In order to service the Knock Sensor (KS), the first thing would be to remove the intake manifold. Next disconnect the KS electric connector and remove the nut that holds the KS. To install the new KS, the screw should be tightened to 20 Nm (177 lb-in) and the reverse procedure to install the screw should be followed.

OEM Mercury Grand Marquis Knock Sensor

Engine Knock Sensor

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Mercury Grand Marquis Knock Sensor Part Number: XL3Z-12A699-AA
$36.36 MSRP: $56.75
You Save: $20.39 (36%)
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Product Specifications
- Other Name: Sensor - Engine Knock; Ignition Knock (Detonation) Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS

Mercury Grand Marquis Knock Sensor

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Mercury Grand Marquis Knock Sensor Parts and Q&A

Knock Sensor
XL3Z-12A699-AA
Q: How to service the Knock Sensor (KS) on Mercury Grand Marquis?
A: In order to service the Knock Sensor (KS), the first thing would be to remove the Intake Manifold. Next disconnect the KS electric connector and remove the nut that holds the KS. To install the new KS, the screw should be tightened to 20 Nm (177 lb-in) and the reverse procedure to install the screw should be followed.