Knock Sensor
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Joined: Jan 2007
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From: Ocala, Florida
Car: 1989 Pontiac Trans Am GTA
Engine: L98 TPI 5.7L
Transmission: Stock ... For now
Axle/Gears: Borg-Warner 9-Bolt
Knock Sensor
Where the hell is the Knock Sensor on the 3.1L??? I've spent hours looking for it and I cant find it...
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Joined: Jun 2006
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From: Sherman, Tx - N. of Dallas
Car: Blue 89' RS
Engine: 5.7L
Transmission: 700r4
Axle/Gears: 3.42
it is on 4-18 in your chilton's manual:
The knock sensor is usually mounted to the right lower side of the engine block. When spark knock or pinging is present, the sensor produces a voltage signal which is sent to the ECM. The ECM will then retard the ignition timing based on these signals.
1. Disconnect neg batt cable
2. Drain engine collant
3. raise and properly support the vehicle
4. disconnect the knock sensor wiring harness
5. remove the knock sensor from the engine block
CAUTION:
The knock sensor is mounted in the engine block cooling passage. Engine coolant in the block will drain when the sensor is removed.
Installation is reverse of removal. 14 ft. lbs (19 Nm).
The knock sensor is usually mounted to the right lower side of the engine block. When spark knock or pinging is present, the sensor produces a voltage signal which is sent to the ECM. The ECM will then retard the ignition timing based on these signals.
1. Disconnect neg batt cable
2. Drain engine collant
3. raise and properly support the vehicle
4. disconnect the knock sensor wiring harness
5. remove the knock sensor from the engine block
CAUTION:
The knock sensor is mounted in the engine block cooling passage. Engine coolant in the block will drain when the sensor is removed.
Installation is reverse of removal. 14 ft. lbs (19 Nm).
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Sep 10, 2015 09:07 PM