Question about Subaru Legacy

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I am taking the knock sensor off my old dead Subaru Legacy GT 2 litre twin turbo to give to my garage mechanic to put on my lastest car the same. Following his advice I have removed the inter-cooler unit on top of the engine and he said it'd be underneath but I can't see it. Can you please tell me where exactly it'd be and what it looks like and any other advice/recommendations??? (I'm looking for a circular coin sized piece with a bolt thru the middle, is that right?) Thanks!

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  • Paul T Apr 29, 2010

    Hi, Thanks for the reply but I'm looking down into the engine with the intercooler unit off and I can't relate the photos to the engine in front of me, some items seem to be different slightly . This is a 1995 Legacy GT. Any thoughts? Thanks.

  • Paul T Apr 29, 2010

    Hi, Just had a thorough answer but the photos don't relate to my engine. Its a 1995 Subaru Legacy GT with the 2 L twin turbo engine. I have the intercooler unit off and I need to find the knock sensor. Looking down into the 'hole' left by the intercooler it doesn't look like the photos... nice fast reply but maybe it was an Impreza engine and not a Legacy maybe??? Please help! Thanks...

  • Paul T Apr 29, 2010

    The photos I have been sent deiscribing the location seem to show a diffent engine and after ages under the bonnet I still can't see how these photos are of same engine. Can anyone please help with location of knock sensor on '94 Legacy GT 2 litre twin turbo engine??? Thanks.

  • Paul T Apr 29, 2010

    nice and fast thanks

  • Paul T Apr 29, 2010

    Thanks for the fast reply I'm just having problems recognising the engine in mine from the photos even after about an hour under the bonnet, it seems to be slightly different. I think I'll have to keep on removing bit at the back of the block till I find it, thankfully I haven't got to put it back together! Thanks for your time.

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The knock sensor of Subaru Legacy GT 2 litre twin turbo:

I am taking the knock - 20945a3.jpg
You need only a socket wrench with a long extension, a pair of strong scissors, and thin fingers.

27ed36e.jpg
The sensor is located on the engine block just under the air intake manifold (see arrow and zoomed image). You will need to unscrew a bolt to get at the wires, then unscrew the bolt that holds the sensor to the engine block. There is a tie around the knock sensor wire, which I simply cut off with the scissors. Pull out the sensor and then disconnect the harness. Install the new sensor by plugging in the harness and attaching the same bolt that held the old one.

32893bd.jpg
I am taking the knock - b3e1bcf.jpgimg src="http://i.fixya.net/uploads/images/b3e1bcf.jpg" alt="b3e1bcf.jpg" class="h_mi" />
Please rate my response. Thanks !

Posted on Apr 29, 2010

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Hi! Yes you are right. Its a coin like with a bolt in the middle. If you are facing the engine, look for the throttle cable. On the left of the throttle cable underneath you'll see the knock sensor. The coin like with bolt in the middle. Hope this helps and have a good one!

Posted on Apr 29, 2010

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