The PCV valve on a 2002 Lexus RX300 is located on the passenger side of the car underneath the hood. The valve will be on the rear valve cover.
First find the source of the rattle then determine what steps to take to stop it.
should be on top of valve cover This picture will help you find the PCV valve http://www.clublexus.com/forums/es300-and-es330-forum/418700-2001-lexus-es300-pcv-where-is-it.html What you really need to know is that if your engine has been desludged the L shaped plastic PCV valve would have been replaced with the metallic, straight screw in PCV valve first introduced in 2002.
in what location can I find the pcv valve on my 2002 chevy tahoe
I find that situation occurs with our RX300 when someone hits/bumps the turn signal switch arm. Often the "toggle" for the lights changes to the "off" position. It's somewhat frustrating when you turn the car on at night expecting the headlights to turn on automatically. All you need to do is turn it back to the "on" position.
A 2002 Ram truck does not have an expansion valve. The ac system uses an orifice tube that is made into the liquid line.
The recharge valve for the air conditioner on a 2002 GMC Envoy can be found by looking at the rear of the engine compartment. It will have a cap over the valve labelled as low pressure side.
beside the spare tire on top of a plate
in the valve body in transmission pan
change the egr valve
It is inside the trans, on top of the valve body.
Contact your dealer.
One can find pricing for used 2002 car models on the 'Motor Trend' website. One can find prices there for many models of car including Lexus, Audi, BMW and Land Rover.