97 civic lx nonvtec. knock sensor? do they have one? i was reading the service manual and i don't see one. do crankshaft sensors normaly go bad? there is two sensors, one in the dist and inder the timmingbelt. i have a engine light for the iat sensor, can that cause the ping? i put premium and it goes away. i need a harnness for that iat sensor too, the wire broke out of the sensor connector