Not familiar with that term for a Rav4. What are you trying to do?
Only one.
The exhaust system on a 1996 Toyota is located underneath the vehicle. This system runs all the way from under the motor to the very back of the vehicle to the muffler.
It will show the PSI for the tire on the side wall of the tire. Usually it is 32 to 35 for best performance and fuel mileage. Hope this helps.
I can't speak directly for a Toyota, but if you have a carberated system then you could be having problems with a leaking vacume hose or something in your EGR valve.
You have two oxygen sensors in Toyota Rav4, One before the catalytic converter and another after.
4 all together
There are two in front on my 1998 Rav4. One on each rail in front, left and right. But, It depends on how many airbags the car has. For example, if there are side air bags as well there will be additional sensors for the side air bags.
The 2001 Toyota RAV4 has 16 valves.
The 2010 Toyota RAV4 has 16 valves.
The 2006 Toyota RAV4 has 16 valves.
The 2005 Toyota RAV4 has 16 valves.
The 2003 Toyota RAV4 has 16 valves.
The 2014 Toyota RAV4 has 16 valves.
The 2011 Toyota RAV4 has 16 valves.
The 2007 Toyota RAV4 has 16 valves.
The 2002 Toyota RAV4 has 16 valves.