The EGR valve is the disc looking device on the back of the intake manifold. There are 3 bolts holding the valve in place, two 10mm size bolts on either side and one larger bolt on the input line. As for the O2 sensors I am not certain of their location.
The oxygen sensors on a 1998 Chevrolet S10 are changed by disconnecting the lead wire and unscrewing them from the exhaust manifold. New sensors are then screwed into place and the wires reattached.
Pretty straight forward. You must remove the intake manifold in order to replace the gasket.
you will need to remove the engine cover fuel rails and intake manifold unscrew the 2 knock sensors screw the new ones in and replace the manifold and fuel rails good to go...
That engine has 2 of them and you MUST remove the intake manifold to service the knock sensors.
Yes. Major job, not for the inexperienced novice.
There are two knock sensors on a 2001 Chevy 1500 with the 5.3 V8. You have to remove the intake manifold, because both of them are located under it. it is best to replace both knock sensors at one time, and you will need an intake manifold gasket too. There are two knock sensors on a 2001 Chevy 1500 with the 5.3 V8. You have to remove the intake manifold, because both of them are located under it. it is best to replace both knock sensors at one time, and you will need an intake manifold gasket too.
Usually, oxygen sensors are installed in the exhaust manifold right after the junction. If it's a 'V' configuration engine (either 6 or 8) there may be 2 oxygen sensors. It's about the only thing that screws in to the exhaust manifold that also has wires.
Remove it with special tool from exhaust manifold and reinstall new one with hi temperature anti-seize grease.
Oxygen sensors require a special socket, unless it is easily accessible to get a 7/8 open end wrench on the sensor. This depends on which engine is in your car. There are several sensors depending on engine size in the exhaust manifold and the exhaust pipe before and after the catalytic converter.
You need to change the downstream sensor that is after the Catalytic Converter
there are 2 sensors on this model one located on the fron pipe and one on top of the manifold you replace them both the same disconect the sensors wire and it will be a 22 or 24 mm nut replace the same way as you took it out.
If it is a 5.3 liter engine, the Knock sensors are located under the intake manifold, when you get the intake manifold pulled off you should see a silver colored pan between the cylender heads, there will be two rubber gromments, pull them up and use a 22mm socket to get them out, and make sure you change the knock sensor wiring harness when you change the knock sensors, it ain't but $23.00 extra to do the job right, don't be a tight wad. -Brad W