location of anti knock sensor on 1998 Subaru Legacy

Hi, facing the engine, where is the anti knock sensor located on the 2.5 liter? Also, is there a way to test?measure resistance, etc? Thanks, in advance. Jon G

by in Hartford, CT on April 19, 2009
1 answer 2 comments
ANSWER by , April 19, 2009
The knock sensor is under the intake manifold right in the middle of the top of the engine. it is black about one inch in diameter about 7/16 of an inch high with a two wire black connector on it. The knock sensor is a piezo cell that generates a voltage when it detects a knock it is tested using a oscilloscope and looking at a patten. Common Subaru fault code.
COMMENT by , July 29, 2010
thank u
COMMENT by , October 16, 2010
do you know where it is in a 97 honda civic