Single exhaust? Look before and after the converter. O2 sensors measure oxygen content before and after flow through the converter.answerThe oxygen sensor is a spark plug shaped device that is screwed into the exhaust manifold. Answer:There is one sensor located before the cat convertor. It will be a 3 wire sensor.
The Oxygen sensor that typically on MOST vehicles is the one closest to the heat of the exhaust. Since the SL1 is a 4 cylinder engine with a single exhaust manifold, check (or replace) the FRONT oxygen sensor, which is in the exhaust manifold, just above the "headpipe". It looks a little like a sparkplug, and should be the only thing in the exhaust manifold that has a wire connected.
If you have a 2.3 or a 2.6 motor, there should just be one oxygen sensor. It will be located on the exhaust manifold. On the driver's side of the motor you should see it down by the firewall. It will have a single wire coming from it.
The Oxygen sensor that typically on MOST vehicles is the one closest to the heat of the exhaust. Since the SL2 is a 4 cylinder engine with a single exhaust manifold, check (or replace) the FRONT oxygen sensor, which is in the exhaust manifold, just above the "headpipe". It looks a little like a sparkplug, and should be the only thing in the exhaust manifold that has a wire connected.
There are 4 oxygen sensors on the 2002 Avalanche, located on the exhaust pipes directly behind the engine. You'll have to put the truck on a rack or crawl under it to see them. Two are located on the left side of the exhaust system, with one on the engine side of the catalytic converter, and one just behind the converter. There are two more on the right side of the exhaust system in the same location: one before the catalytic converter, and one after. You'll be looking for a "tap", or an insert into your exhaust pipe, with a single wire coming out of it. The wire is connected to the oxygen sensor, which is screwed into the "tap".
Follow the exhaust back, in the exhaust there should be spark plug looking sensors with a smaller single wire coming out the top, these are your oxygen sensors. Depending on year there can be one to four sensors on your auto.
I am pretty sure there are 2 of them. They are on the exhaust near the engine and on the catalytic converter. Look for a single wire.
There is actually two on this car. One is on the exhaust manifold with a single wire under the hood and. One is after the cat under the car
The O2 sensor is in the front of the engine. If you look at the exhaust manifold by the heat shield you will see it. It screws into the exhaust and has a single wire coming out of it running back toward the drivers side of the engine. Easy to change
There IS an oxygen sensor BEFORE the catalytic converter and that's the one that typically needs to be replaced. Not all vehicles have a second oxygen sensor after the catalytic converter and of those that do, it almost requires physical damage to the vehicle to damage the rear sensor. The front oxygen sensor screws into the exhaust manifold, typically right where the exhaust comes together into a single pipe. It will be a screw in device that looks similar to a spark plug and it should have 2 or more wires out the top. If you crawl under the car and look you will know for sure.
The crankshaft sensor is located on the side of the block below the exhaust manifold on the firewall side of the engine. It is held in by a single bolt. Access is quite tight but it can be replaced with the engine in the car.
They are in the exhaust pipe system, Just start at the exhaust manifolds on the engine and work your way back to the muffler, There will be none after the muffler. They are about 3 inches long and have 1 single wire going to them. I think there is 3 of them.
It's going to be on the exhaust system somewhere. My 97 has it right in front of the motor next to the radiator coming out of the exhaust manifold. Looks like a spark plug looking thing with a single wire coming out of it.
It depends on what body style the the engine is in, whether it has single exhaust or duals. On my 91 K3500 with a 454 is on the passenger side exhaust pipe next to the transmission. They are usually a little higher up. Hope this helps.
Bank two is the passenger side. Sensor 2 is the one that is down stream(after)of the catalytic converter.
The heated oxygen sensor, or O2 sensor is located at the exhaust system before the catalytic converter. Removal & Installation # Raise the vehicle and support it with jackstands. # Disengage the O2 sensor wiring connector and remove it using tool YA 8875, or its equivalent. # Inspect the threads of the new O2 sensor. Apply an anti-seize compound only if there is none visible on the threads. Be careful not to contaminate the sensor tip with any foreign compounds. # Install the sensor using tool YA 8875, or its equivalent and engage the wiring connector.
Start at the exhaust manifold and follow the exhaust from the manifold rearward. You will find the O2 sensors. It may be mounted right on the manifold or somewhere on the exhaust pipe. Looks like a spark plug base with a single wire attached. Unhook the wire and use a boxed end wrench to unscrew & remove/replace the sensor.
1995 Chevrolet Astro, 4.3 V6 engine with Single Point Injection System has one O2 sensor located in exhaust pipe (between catalitic converter and the place where exhaust pipes from right and left cylinder heads meets in one pipe).
Most O2 sensors are in the Exhaust pipe running from the back of the manifold. It is silver with a single black wire running to it. It threads into the exhaust pipe like a spark plug and can usually be accessed from under the hood. Happy Wrenching.
On the 2.4 L the up stream O2 sensor is located in the exhaust manifold between the engine and the firewall. It has a single wire coming out of it. I believe it will be a purple wire. The down stream, heated O2 sesor is located under the car after the catalytic converter in the ehaust piping. It will have four wires coming from it.
They are in the Exhaust pipe system, And have one single wire going to them. Start up by the engine and work your way back the exhaust system and you will find them, I believe there is 3 in the system. Nothing after the muffler.
Two if you have a V6 with single exhaust. One before the cat. converters and one after. A total of 4 if you have the V8 with dual exhaust
The sensor is on the driver side of the head. It has a single wire to it.
If your car has the 2.5L 4 cylinder engine the crankshaft position sensor is located on the back side of the engine behind the ignition module which is below the intake manifold toward the rear of the engine. You can follow the spark plug wires to it. If your car has the 2.8L V6 the sensor is located on the back of the engine below the exhaust manifold. It has a single wire and is held in by a single screw. It is in about the center of the engine. The knock sensor is located nearby, but is screwed into the block and has pipe threads. By back of the engine I refer to the side next to the firewall.