If you're having fuel pump problems, the issue isn't a reset. Instead, consider these possibilities:
* Fuel pump relay: This is an electrical component that controls power to the fuel pump. A bad relay can prevent the pump from running. You can try swapping the relay with a known good one (often found in the under-hood fuse box) to see if that solves the problem. The relay is usually clearly labeled.
* Fuel pump fuse: Check the fuse box for a blown fuse related to the fuel pump.
* Fuel pump itself: The pump may have failed due to age, wear, or debris in the fuel tank. This requires replacement – a significant repair.
* Inertia switch: Some vehicles have an inertia switch that cuts power to the fuel pump in a collision to prevent fuel leaks. Check the inertia switch (usually located under the dash or in the engine compartment) and see if it needs to be reset (it usually has a button to push).
* Low fuel: Make sure you have enough fuel in the tank. The pump won't run if the tank is nearly empty, though the symptoms of that are usually different (a sputtering engine that eventually stops).
* Wiring problems: Damaged or corroded wiring can interrupt power to the fuel pump. This requires tracing the wiring to find any breaks or corrosion.
Before attempting any repairs yourself:
* Disconnect the negative battery terminal before working on any electrical components.
* Consult a repair manual specific to your 1991 Ford Ranger. This will provide diagrams and detailed instructions for locating components and performing repairs.
If you're not comfortable working on your vehicle's fuel system, it's best to take it to a qualified mechanic. Fuel system repairs can be dangerous if not handled correctly.
