Question about 1999 Subaru Legacy

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Knock sensor 1999 Legacy 2.2

Where is knock sensor location on engine is there more than 1

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  • messstat
    messstat May 11, 2010

    There is no "knock sensor" to locate...it's built in to the programming of the ECM. How many miles are on this car?

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As far as there being no knock sensor on a 99 2.2 I beg to differ. I have a 99 legacy and just had a diagnostic done and mine is bad. If there is no knock sensor why would it say it was bad and why does Auto Zone, Advanced Auto and my local Subaru dealer sell them. Mine is located under the throttel body and they are rather hard to get to. No offence to who ever said ther is no knock sensor but maby you should recheck your information becuse I know there is a knock sensor since I just changed mine.

Posted on Jun 30, 2009

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Knock sensor for 2007 Saturn outlook. I can't pass emissions test!


Check engine light on ? What code ? There are many different (DTC'S) - diagnostic trouble codes that can set for knock sensors ! There all don't mean that you replace the sensor .
DTC P0324: Knock Sensor (KS) Module Performance
DTC P0325: Knock Sensor (KS) Circuit Bank 1
DTC P0326: Knock Sensor (KS) Performance
DTC P0327: Knock Sensor (KS) Circuit Low Bank 1
DTC P0328: Knock Sensor (KS) Circuit High Bank 1
DTC P0330: Knock Sensor (KS) Circuit Bank 2
DTC P0332: Knock Sensor (KS) Circuit Low Bank 2
DTC P0333: Knock Sensor (KS) Circuit High Bank 2

The knock sensor (KS) system enables the control module to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation. The sensors are located below each cylinder head on the engine block. The KS produces an AC voltage signal that varies depending on the vibration level during engine operation. The control module adjusts the spark timing based on the amplitude and the frequency of the KS signal. The control module receives the KS signal through 2 isolated signal circuits. The control module learns a minimum KS noise level at idle and uses calibrated values for the rest of the RPM range. The control module should monitor a normal KS signal within the noise channel.
Knock Sensor Replacement - Bank 1
Remove the exhaust manifold lower heat shield. Refer to Exhaust Manifold Lower Heat Shield Replacement.
Disconnect the engine wiring harness electrical connector (1) from the bank 1 knock sensor (2).
Loosen the knock sensor bolt and remove the knock sensor.
Knock Sensor Replacement - Bank 2
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Remove the engine oil filter. Refer to Engine Oil and Oil Filter Replacement .
Lower the vehicle.
Disconnect the engine wiring harness electrical connector (2) from the bank 2 knock sensor (3).
Loosen the knock sensor bolt and remove the knock sensor.

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1 Answer

1994 nissan sentra sx 200 knock sensor location


Melvia, Knock sensor located under the intake manifold between cylinder #2-3 I believe, hard to change with out removing intake manifold, but can be done. Check the attached links,instruction and guides, Good luck
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1 Answer

Where is the knock sensor located


This vehical has two knock sensors bank 1 and bank 2 ! bank 2 sensor screws into the side of the engine block closest to the firewall. and it is above the crank sensor. Knock Sensor (KS) Bank 1 sensor is on front side of engine block right of the oil filter and on the other side of knock sensor is the oil pressure sending unit.

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Where is the knock sensor located in 1999 lexus es300


the knock sensors are located underneith the intake manifold on either side of the engine block. you have 2 of them

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Where is ths knock sensor bank1 located on a 1999 bmw 750 il


the knock sensors are located on the cylinder heads. the connect to the wiring harness almost directly in the middle of the intake manifolds on the center of the top of the engine. There are two, one for each bank, with each having two sensors per bank. Bank 1 is cylinders 1-6 which is located on the driver's side I beleive.

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1 Answer

Where is my knock sensor bank 2 located at on my jaguar x-type? (2002, 2.5 cylinder v6)


There are two knock sensors located on top of the Engine, approximately in the middle of the 4 cylinders at each bank.
To get access to the sensors the black plastic engine cover with the "Jaguar V8" imprinted on has to be removed.

There are two types of knock sensors.
The "old" ones that are of a "screw-in barrel type" and the newer ones that are just bolted on.

I describe the replacement of the bolt-on type knock sensor on Bank 2 in the following documentation on a 1999 XJ8 AJ27 engine.

Be careful!
Knock sensors are piezo electric devices that are very sensitive! If dropped, over-torqued or struck they will probably be destroyed.
As knock sensors are sensitive to a sudden temperature change they are also easily fractured by steam blasting a hot engine.
So handle the knock sensors with great care and let the engine always cool before fitting a new sensor!

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1 Answer

Service soon light stays on.. had it checked at auto zone and came up with po327 knock sensor condition. Is this gona be an expensive car repair?


no, 30 minutes labor--you can do it yourself. part is $30. You have 2 of them. 327 is for bank 1, which is the back bank by the firewall. see picture below (the picture is bank 2, but location is same on other side).

To replace the knock sensor:
  • Disconnect the knock sensor wiring connector.
  • Then, unscrew the sensor.
  • Remove the knock sensor.
  • Reverse the procedures to install the part.
  • fed2730.gif
      A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.

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    1 Answer

    1997 subaru legacy outback knock sensor location


    Hiya,

    Here you go:

    2.5L Engine To Remove:
    1. Disconnect the battery ground cable.
    2. Remove the air cleaner housing.
    3. Vehicles with 5-spd transmission: Remove the clutch slave cylinder and set aside.
    4. Disconnect the knock sensor wire harness retainer from the coolant hose.
    5. Disconnect the knock sensor (KS) wire connector.
    6. Remove the mounting bolt and knock sensor from the engine block.
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    Hope this helps...

    Cheers,

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