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Old 06-15-2005, 02:29 PM   #1
Kensubguy
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Default Changing knock sensor

What is the size of the nut/screw holding a 99 subaru legacy knock sensor. I have a new one to change and need to get the right tool for it. Anyone done it?
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Old 06-15-2005, 02:34 PM   #2
wrx_driver_2002
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The Bolt has a 12mm head. They're pretty easy to change, as long as you do it when the engine is cold. If you get about a 12" extension and a 12mm socket, that should do it for you.
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Old 06-15-2005, 03:10 PM   #3
Kensubguy
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Quote:
Originally Posted by wrx_driver_2002
The Bolt has a 12mm head. They're pretty easy to change, as long as you do it when the engine is cold. If you get about a 12" extension and a 12mm socket, that should do it for you.
Thanks wrx_driver_2002. I finaly bought the sensor after holding out and hopefuly I can do it this evenning
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Old 06-17-2005, 10:39 AM   #4
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Thanks to all your guidance I have the sensor changed. Do I need to reset the ECU or just wait for the car to figure out.
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Old 06-17-2005, 10:51 AM   #5
wrx_driver_2002
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It would be best to just reset it.l
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Old 06-17-2005, 11:22 AM   #6
Mgardenier
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15 min, in the dark with a slightly warm engine. knuckles not too happy, but night and day difference. and yes, reset the ecu.
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Old 06-17-2005, 02:18 PM   #7
subysouth
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Reset it.

ss
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Old 06-20-2005, 02:01 PM   #8
Kensubguy
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This 99 subaru legacy has very poor take off from stop signs and poor speed uphills. If I have the A/C on the car has a hard time getting up to speed. I have recently changed plugs, wires and fuel filter and now the knock sensor. Is this normal for a 2.2L engine.
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Old 06-20-2005, 02:36 PM   #9
Mgardenier
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auto or manual?
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Old 06-20-2005, 02:51 PM   #10
Kensubguy
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Quote:
Originally Posted by Mgardenier
auto or manual?
Auto transmission
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