What causes surging at steady throttle 2500rpm 1988 fiero gt?

Surging at a steady throttle around 2500 RPM in a 1988 Fiero GT can be caused by several factors, including a malfunctioning throttle position sensor (TPS), vacuum leaks, or issues with the fuel delivery system, such as a clogged fuel filter or failing fuel pump. Additionally, ignition system problems, such as worn spark plugs or faulty ignition coils, can contribute to inconsistent engine performance. Checking these components systematically can help identify and resolve the surging issue.