1995 Volvo 850

Engine Mechanical problem
1995 Volvo 850 4 cyl Two Wheel Drive Automatic 207000 miles

I have a 1995 volvo 850 turbo. And the check engine light is on its showing the code for the knock sensor. I was planning on puting it on my self but have no idea were it is ive spent alot of time looking for it and cant find it any help would be great thanks.
February 21, 2008.

Almost above the starter
left side of the engine
here what I have for location
good luck
let me know

Feb 21, 2008.
Well I think I know were it is now. Its UNDER the INTAKE manifold ( you cant see it with the hood poped) I tired today on my lunch break with my buddie to try and figure out were it was. We tried going from under the car jacked up and no luck. We do know its under the manifold because thats the only spot we cant see. What do you think? Take off the intake manifold or go for it from underneath? Any more help would be great, thanks.

Feb 22, 2008.