2002 RANGER RUNS OK UNTIL RPM GOES OVER 3000 AND THEN IT LOSES POWER. NO CHECK ENGINE LIGHT-PLUGS WIRES ETC REPLACED RECENTLY NEW AIR FILTER, CLUELESS.

Do you have check engine light, what is the code if you do. My brother had a 2000 ranger and the codes helped me fix it.

try fuel filter if doesnt work check fuel pressure sounds like fuel pump if not filter

I would check into replacing a fuel pressure regulator its easy to install and it usually under 10 bucks.

Have checked the air filter?

it is possibly the throttle position sensor(tps) malfunctioning. basically the computer or "brain" of the car thinks the throttle is in a different position than it really is and automatically makes adjustments to fuel, air ect.... based on these false readings from the sensor thus causing the engine to react a little different when you expect to have power.

Check the air filter If it's dirty replace it. and replace the fuel filter

I would check the fuel filter, which is under the car, below the passenger side rear seat.

I would check for a vacuum leak, also check the air filter and replace the fuel filter, if it hasn't been done.

I agree. Try replacing the spark plugs, install new spark plug wires, change the air filter, change the fuel filter, and test the battery and alternator. Run a bottle of fuel system cleaner and water remover through it. To replace the spark plugs you'll most likely have to go through the wheel wells cause of their hard accessibility from the top. The fuel filter is located on the inside of the frame on the driver's side. Hope this helps. God bless

Thats the mass air flow meter.Should get changed at 60.000 miles. Also change the air filter.