SnipesXxX

I have a 2000 GA SE with a 2.4 and 160k miles. I was looking in a repair manual and I did not know anything about a knock sensor. I am wondering if maybe it ain't bad because when the car is under load(A/C, heat, ect) the engine makes a noticeable knocking sound. Is this a normal sound for these Quad 4's or could the sensor be bad?

xeroinfinity

YOu would need to have it scanned to find out if the sensors bad.
Your knocking could be something else.....

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1999 Grand Am SS 3.4 OHV

SnipesXxX

if it wasn't working would it throw a check engine light?

xeroinfinity

Not always. If was working within the threshold of the sensro perameters it might not, if was totaly broken or has a bad circuit then it would throw a DTC.

Though, if its pounding/knocking like a hammer beating your engine block... its probly not the sensor.

Go get it scanned !

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1999 Grand Am SS 3.4 OHV