Is her Camry to run a little rough? has your inspect engine light come on? your knock sensor may have actually gone bad. This is no a terribly challenging DIY job; you can handle that in simply a few minutes. A expert is walk to run you plenty to adjust it, including charging you an ext for the component that you can conveniently get yourself. If you have actually the extra time to spend and also don"t mind gaining a small dirty, you deserve to really walk on the cheap by gaining to a local pick and also pull salvage yard and also finding a an excellent knock sensor top top a scrapped Camry. If the is not your game, you deserve to find new ones digital for much less than $50. Installing is nice easy, so save your money and take this job on in your own garage.

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Materials NeededHydraulic floor jackJack stands27 mm deep fine socket, 12 and 14 mm sockets3/8 or 1/2 ratchet v extensionTorque wrenchDENSO punch sensor (optional)

Step 1 – place on jack stands

Jack up the front finish of your Camry and collection it ~ above the jack stands in ~ the suitable locations ~ above level ground. You might want to location a shop rag or similar on the jack and jack was standing plates to protect the anti-rust undercoating on your frame. Always use jack stands as soon as working underneath any kind of vehicle. Making use of a floor jack alone deserve to be dangerous. Make sure that you chock the rear wheels indigenous the front and also behind.

Figure 1. Utilizing a rag top top the jack key will defend that necessary undercoating on her frame.

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Step 2 – Disconnect battery

Although this action isn"t mandatory, it is always a an excellent idea come disconnect the negative (black) battery terminal before working on your vehicle, especially when functioning with electric parts or sensors.

Figure 2. You have to make that a exercise of disconnecting the battery prior to working on her vehicle.

Step 3 – Disconnect wiring harness

Crawl under the car and you"ll find the knock sensor top top the behind side of the engine to the ideal of the exhaust pipeline just listed below the input manifold. Over there is a brace that can need to it is in removed. It takes a 12 and also a 14mm socket to remove both bolts. It comes off quite easily; set it aside. Reach up in there above the sensor plug and disconnect the wiring harness. It can be tough to pinch the connection clip, for this reason a pair of needle sleep pliers may be necessary. Pull turn off the connector.

Figure 3. Situate the hit sensor just under the input manifold beside the exhaust pipe.

Step 4 – remove sensor

The yes, really sensor is oriented in ~ an upwards angle. The is a little bit odd gaining the 27 mm socket on the from listed below the vehicle, so girlfriend will have to play through it a bit. The is most likely going come be less complicated putting the socket on the expansion first, obtaining it seated every the way, and then connecting the ratchet to the extension. This is the most challenging part of the job. This sensor is torqued on yes, really tight and the engine heating and cooling doesn"t aid in your quest to eliminate it. You might want to usage a breaker bar if girlfriend have sufficient room, or a command pipe end the handle of your ratchet will help.

Please make sure that your vehicle is securely on the jack stands, and then give it your ideal shot to remove this sensor. Friend will need to wrench on it really hard. If yours comes off really easily, well, that might have been her problem. You can torque it earlier down tight and also see if your car still throw the error code. You more than likely won"t be so happy anyway!

Figure 4. Make certain you appropriately seat the socket top top the knock sensor.

Step 5 – Install brand-new sensor

Insert the brand-new sensor right into the block; you need to hand tighten it first. Stripping the threads is no funny and, since this is oriented in an odd fashion from under the vehicle, hand starting it is a very good idea. It should screw in nice easily and also you have to not must use Loctite on the threads together you will certainly be torquing this to 32 ft./lbs.

Figure 5. Toyota OEM hit sensor indigenous DENSO has actually a much an ext favorable an answer from Camry owners.

Step 6 – Reconnect wiring harness

Once you have actually the brand-new knock sensor torqued in properly, reconnect the wiring harness. (If you had to remove the input manifold brace, replace it now). Fall the car and re-connect the battery. The check engine light code must clear and also the warning light should turn off. Take the automobile for a spin. It need to run 100 percent much better than before.

Make sure the irradiate does no come ago on. If it does, you most likely have much more than one error code than just the sensor. The wiring harness could be shorted the end somewhere. This will require more extensive job-related from above the engine to trace the wires earlier from the sensor and also replace them as well.

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Figure 6. Reconnect the wiring harness.

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