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Location of knock sensor, 1997 subaru outback with regular 2.5 engine

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Stand at the front drivers tire, Peer over just below where the throtle cables connect onto the side of the throtle body, Now look straight down. It's that round black thing bolted to the top of the motor with a wire coming out over to a connector under the intake manifold.

Posted on Aug 06, 2008


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check the knock sensor.
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Location knock sensor1997 subaru legacy outback

The knock sensor is located on the top of the engine block almost hidden from view by the intake manifold. It is almost directly below the spot where your throttle cable connects. It will have a bolt running right through the middle of it and a single wire coming out of it.

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1997 subaru legacy outback knock sensor location


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.
Hope this helps...


Nov 12, 2009 | 1997 Subaru Outback

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What should I check on a 97 Subaru Outback that shows a knock sensor code?

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CEL lights only come on if a sensor fails its diagnostic, it is nothing to do with the particular sensors readings, but telling you the sensor itself is bad.

The knock sensor is a little microphone attached directly to the cylinder block side wall.

Oct 22, 2009 | 1997 Subaru Outback

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Where is the knock sensor located on a 2.5 Subaru outback 1998?

directly below the throttle body on the drivers side of the engine block. Has a white connector attached to a single black wire lead. I had to remove the black plastic piece that connects to the throttle body and the air filter housing, in order to see/get at it. Easy fix once you find it. Haynes manual shows it in a different location, so don't confuse yourself looking at the diagram.

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