Knock sensors detect detonation ( knocking ) by reacting to the ping by retarding the ignition timing so you will need a timing light for this. connect the timing light and locate the knock sensor, ( many are on the intake manifold ) now use a metal object to tap ( not too hard and not on the sensor itself ) on the intake manifold ( light tapping should suffice ), if the sensor is functioning you will see the timing retard. If the timing does not retard you will need to check voltage across the terminals of the knock sensor connector.
The knock sensor for a Pontiac G6 is located on the side of the engine. It is mounted at the exhaust manifold.
usually on the side of the engine by the crankshaft. The knock sensor provides the computer the position of the crank shaft to give it the right information to get correct timing. A bad knock sensor will cause it to run ruff or not at all The knock sensor senses spark knock or pinging and sends that info to the ecm. The ecm then in turn retards the timing until the ping stops. You can test the knock sensor with the engine running, with a timing light attached watch the timing marks as you tap the engine block with a small hammer, you will see the timing retard briefly.
remove the sensor, backprobe the plug with a multimeter set on voltage, tap the knock sensor lightly with a spanner, you should see voltage respond by increasing whenever you tap it, this means your knock sensor is working correctly. if it does not move however it means that the sensor is faulty.
There really isn't any way to test the oxygen sensor to see if it is good or bad. If your check engine light is on you can take it to Autozone and they will hook it up to computer and if the oxygen sensor is bad, the computer will detect it.
With a Chrysler scan tool. Have it diagnosed at the dealer.The only way to test them would be to take it out and check to make sure it has continuity. If its has detected a knock it will put the check engine light on. If the light is on then have it scanned and see why it is on.
There is 2 of them and they are underneith the intake manifold. You will have to remove the intake to even see them are get to them. BAD DESIGN ON CHEVYS PART.
how can i check sensor to see which one is bad on toyota avalon
The knock sensor is located just below the intake manifold youll have to get under the car to see it, it goes right into the back of the block.
Knock sensorThe knock sensor for a 1996 Nissan Altima is located on the backside of the block above the oil filter.But before you go and change it out, run a tank of the best/hightest rated gas you can find and see if that fixes the problem. On my 1995 the Knock sensor is located under the plenum and intake manifold on top of the middle of the block.
It is underneath the intake manifold. If you look straight down from your throttle body, you will see a sensor with one wire coming out and a bolt going through the middle of it, that is the knock sensor.
You will have to test the resistance on it to make sure it is within specs.
There is two of them,and they are under the Intake manifold.You will have to remove the intake to even see them and to remove them.Bad place for GM. to put them.
under the fuel rail It's under the intake manifold actually. If you look between the #2 and #3 runners with a flashlight, you can see where the knock sensor is bolted to the engine.
Standing on the driver side, looking under the center intake manifold; you will see a round black object with a 10mm or 12mm bolt in the center, which is the knock sensor.
the knock sensor is located under the intake manifold, with a flash light you can see it however you have to remove the intake manifold to replace the knock sensor , also you will need to replace the intake gasket set as well!
There is 2 of them, and they are underneith the intake manifold. You can't get to them are even see them until the intake is removed. Bad design on chevys part.
That engine has 2 of them and you have to remove the intake manifold to even see are to get to them.
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.
There are 2 knock sensors on that engine. Both of them are underneith the intake manifold. You must remove the intake to even see them and to service them.
If the sensor is bad you will not get spark. Pull off #1 plug wire. careful to only touch the rubber part on the wire, hold the metal tip close to the spark plug & have a buddy turn the engine. You should see a blue arch between the 2 showing you have good spark. You can also test the sensor by disconnecting it & using a voltmeter to test for continuity through the wires.
To test a 1995 Cavalier crank sensor you would need to get a mechanic's computer. They can put a sensor/fuse tester on it and see if it is working properly.
It has 2 of them and there both underneith the intake manifold. You can not see are get to them until you remove the intake.
it's hard! you have 2 knock sensor under you plastic intake. than you take your intake off you will see a wire with two black top about 1 1/2 to 2 in. pop those off and there there they are. it is a good idea to replace them both and get you a new wire from the dealer fro the knock sensor. i hate to hear you have to do it twice just cause you did not want to buy the knock sensor wire. and if you careful you can save the intake gasket. be sure and buy all you parts first. 2 knock sensors , knock sensor wire and intake gasket. if you don't used it take it back .
Most problems are a bad wheel sensor, you will have to have the system checked out to see which wheel sensor is bad.
That engine has 2 knock sensors and there both underneith the intake manifold. You can not see are get to them untill you remove the intake.