"Under the back seat" Clarification to previous answer.
Actually, the fuel pump is mounted in the top of the fuel tank, located under the back seat. The fuel pump does have a filter screen that may need to be replaced if the care has been setting and the fuel has becomes old (varnished) or if bad fuel (water or sediment) has been added.
The actual fuel filter is under the hood, driver's side fender well, under the recirculation canister.
It is best to jack up the car on the driver's side, remove the front wheel, to give the best access to the in-line fuel filter.
in the gas tank
I have a 1985 celica GT and the fuel filter is located above the oil filter on the engine block. If the ST model has a 22re engine it should be the same.
The fuel filter is located on the drivers side under but close to the air filter and the brake master cylinder.
The fuel filter for 2002 and all 7th Generation Celicas(2000 thru 2005) is located inside the fuel tank
If it is an 89 st model with the 3sfe or 2.0l the fuel filter is located on the driver side just below the master cylinder.
The fuel filter is located under the vehicle near the fuel tank and is connected to the fuel line. The oil filter is located behind the wheel well on the passenger side of the vehicle.
Its located on the drivers side engine panel toward the bottom its very difficult to get to.
drop the tank.......
Right under the intake on the passenger side of the engine, near the firewall but still on the motor.
The fuel filter location is inside the fuel tank along with the fuel pump in order to get to it you have to remove the back seats there's a video on youtube on how to do it just type in "Replacing fuel pump / filter on toyota celica Gt'' but the fuel filter can only be bought via internet because no auto part store carries it.
Mounted on top and inside fuel tank.
on the fire wall in the engine compartment