Assuming you mean coolant (shouldn't run straight water), the coolant is pumped through the water jacket by means of the water pump. This is part of the cooling process for the engine. The knock sensor happens to be where the drain plug used to be.
It is screwed into the water jacket on the side of the engine block just in front of the starter. It is HARD to see. It will have an electrical connector plugged into it.
It is on the passenger side of the engine just in front of the starter. It is round and has an electric wire pluged in the end of it. It is screewed into the water jacket in the side of the block.
No, the knock sensor helps the engine computer control ignition timing. The water pump pumps coolant through the engine, heater, and radiator.
It is located in the side of the engine block close to the starter . it has a single wire connector and it screws into the water jacket. So be careful when you remove it because engine coolant will come out
Nope prob leaking freeze plug
IN THE WATER JACKET.
Probably knock sensors.
To the left of the thermostat housing, It screews into the intake water jacket.
it is behind the thermostat in the water jacket
The Knock sensor is located on the lower side of the engine near the oil pan rail and goes into water. Make sure your engine is cool before you start the job. The best way is to drain all of the coolant out of the engine first, then disconnect the wire, then remove the knock sensor. WARNING--antifreeze will come pouring out when you take the knock sensor our so WEAR SAFETY GOGGLES to protect your eyes. Do not use any sealer other that the sealer that is on the new sensor.
on a 2001, with the 3.3, the knock sensor is under the water crossover pipes, which are under the intake manifold. Pain to change. Take off plenum, intake manifold and there it is, on top of the block between the heads.
Somewhere on the block, try gooseneck attached to upper hose or proximiny. Remeber it threads into water jacket somewhere.