Your public library has FREE automotive repair information, in book form and on line. Some libraries have free access to www.allata.com, for free. Ask a liberrian.
Test the fuel pressure with the engine under load. You can load the engine by putting the A/T into DRIVE and raise the engine speed to 2,000 rpm. Or, you can drive the car (with the fuel pressure gauge on a long hose and laid on the windshield), and load the engine by keeping pressure on the brake, and observe fuel pressure.
The performance problem may be in the ignition system, or the fuel injectors. A repair manual (of any type) could help you troubleshoot.