It has two of them. One is before catalytic converter and second one is after.
Look on the rear of the air filter enclosure.
It's next to the timing belt gear. The sensor can be accessed from the the firewall side.
Toyota Camry 1998 takes 4 liters
It identifies "Top Dead Center" for cylinder #1 for proper firing order to the computer.
On Camry 1998 all sensors are OBD 2 because it's a standard. You need to specify which sensor you are talking about.
The air flow sensor is located inside the air box of a 1998 Toyota Camry LE. To replace the unit the air box screws must be unmounted and the sensor disconnected.
its 3.78 litre
It's 5W30.
4 cylinder is, V6 is not.
Replace the bulb that is burnt out.
Under the hood
The Camshaft Sensor on the 5S-FE engine it located on the back of the cylinder head (facing the firewall) next to the back of the timing cover. It is fastened to the cylinder head with a 10mm bolt.