2003 mazdaspeed protege vaccum diagram - Protege Mazda Cars & Trucks

SOURCE: 2003 Mazda protege had rough idle and wants to stall when I stop.

The idle on my 2003 Mazda Protege started acting strange one day - it kinda surged forward a little bit. Then the RPM would drop and kept wanting to stall out. It stalled out at a stop sign. The check engine light came on. I drove it immediately to my Goodyear mechanic. It ended up being the Idle Air Control Valve. They had to order the part from Mazda which took 3 days to get there. The whole thing cost $700. Runs great now (again).

SOURCE: I am wondering where the fuel filter is located on

Thanks for choosing FixYa and welcome. They are usually located between the tires, toward the back, on the same side you fill up gas on. Go to the gas cap and look under the car. You will see the gas lines. Follow them toward the front of the vehicle and you will run into your fuel filter.