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.