* Faulty Fuel Pump Relay: This is often the first suspect. The relay acts as a switch, controlling the power to the fuel pump. A failing relay might sometimes make contact, sometimes not. Relays are relatively inexpensive and easy to replace.
* Faulty Fuel Pump Inertia Switch: This safety device cuts power to the fuel pump in a collision to prevent fuel leaks. If it's malfunctioning, it might be intermittently interrupting power. It's usually located in the passenger compartment, often under the dash.
* Wiring Issues: Worn, corroded, or damaged wiring in the circuit leading to the fuel pump can cause intermittent power. This includes the connections at the fuel pump itself and the wiring harness. Look for chafing, broken wires, or corrosion in the connectors.
* Low Fuel Level: While less likely to be the sole cause of complete failure, a very low fuel level can sometimes cause the pump to struggle to draw fuel, leading to inconsistent operation.
* Fuel Pump Module (if equipped): Some Camaros might have a fuel pump module which houses the pump and other components. A problem within this module could cause intermittent issues.
* Failing Fuel Pump: While less likely to cause *intermittent* problems, a weak or failing fuel pump *can* exhibit inconsistent behavior before completely failing. This is often accompanied by other symptoms like weaker fuel pressure or noisy operation.
* Power Supply Issues: Problems with the car's battery, alternator, or other components in the power distribution system could affect the fuel pump's ability to receive power consistently.
Troubleshooting Steps:
1. Check the fuel level: Rule out a simple low-fuel situation.
2. Check the fuel pump relay: Locate the relay (consult your owner's manual or online resources), and try swapping it with a known good relay of the same type. This is a quick and easy test.
3. Check the inertia switch: Locate the inertia switch and reset it (usually involves pushing a button). If this solves the problem, the switch may be faulty.
4. Check the fuel pump fuse: Make sure the fuse for the fuel pump is not blown.
5. Listen for the fuel pump: When you turn the ignition key to the "on" position (before cranking), you should hear a brief "whirr" from the fuel pump. If you don't hear it consistently, the problem likely lies within the power circuit.
6. Visual Inspection: Inspect the fuel pump wiring harness for any signs of damage, corrosion, or loose connections.
If you've checked these things and the problem persists, you'll likely need a professional mechanic to diagnose and repair the issue. They can test the fuel pressure, assess the fuel pump itself, and investigate the electrical system more thoroughly. Don't attempt to work on the fuel system while there is still fuel in the tank; fuel is highly flammable.
