there are two wires
The knock sensor is located in the valley between the cylinder heads underneath the intake manifold. If you look in on the driver's side, it's the little black sensor with wires coming out. The connector for it is by the front cylinder head (follow the wires). They say you have to remove the whole $%^&ing intake manifold at a labor rate of 4 hours to get at it. I've found posts where people say they've gotten it out with extensions and u joints. Good luck, the dealer wants $900
A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. The knock sensor generally threads into the engine block. This code may show up intermittently or the Service engine light may be lit constantly. You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms. * The knock sensor is faulty and needs to be replaced * There is a wiring short/fault in the knock sensor circuit * Check the resistance of the knock sensor (compare it to factory specs) * Check for broken/frayed wires leading to the sensor * Replace the knock sensor
The knock sensor is just behind the intake manifold on the top of the engine. It is a few inches below the manifold and all you will see is a bolt with what looks like a very thick washer on it with wires coming out of it. The knock sensor appearance has been described as a small donut. Easiest to see while leaning over the left front fender using a flashlight.
Open hood , remove neg battery cable , remove intake hose , air filter box , remove throttle body and wires , water hoses that are connected to it , remove intake manifold , there are 2 sensors under the intake , one of them is the oil press switch , other one is the knock sensor , knock sensor is the one closest to the cylinder head
Make your way to the front of the engine, remove the plastic v-belt cover from the power steering pump inlet, the sensor sits just above the crank pulley. There's a plastic plug with two wires which needs to be pulled out from the knock/crank sensor. Then use a small spanner to loosen the 2 screws on either side of the sensor.
Also you can remove the front oxgyen sensor and drive it. If the problem goes away it is probably your catalytic converter. The dealer replaced mine because the van has less than 80000 miles on it.I have a 2000 and I tried to get around replacing the knock sensor. I replaced fuel injectors, wires, plugs, distributor and some other parts. All this helped, but van still lose power and surges after engine hot. I been told after all this that the knock sensor retards timing and causes the fuel not to burn as it should. It not only senses knock, but is a protective device for the engine. I just purchased one on eBay for $65 and will install later this week. Should have replaced it when I first got the code.AnswerThat does not sound like a knock sensor problem. the knock sensor senses "knocks" in the engine and retards the timing accordingly. The knock sensor should not affect stalling, the problems are probably not related. The knock sensor itself is located under the lower manifold. It is a lot of fun to get to.
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