1992-1993 F150-F350 Fuel Pump Circuit Tests (Ford 4.9L, 5.0L, 5.8L)

Fuel Pump Unit Wiring Diagram (Single Tank)

Fuel Pump Inertia Switch Diagnostic/Troubleshooting Notes:

• The DK GRN/YEL wire:
  • Should have 10 to 12 Volts DC while cranking the engine.
  • This power comes from the fuel pump relay.
• The PNK/BLK wire:
  • Should have 10 to 12 Volts DC while cranking the engine (if the inertia switch IS NOT tripped).
• Inertia Switch (unplugged from its connector):
  • Continuity should exist between pin that connects to DK GRN/YEL wire and pin that connects to PNK/BLK wire (if switch IS NOT tripped).

Where To Buy The Fuel Pump And Save

You can find the fuel pump and fuel pump strainer filter in any auto parts store. If you're wanting/needing to save a few bucks, then buying the fuel pump/strainer filter online is the route to take.

The following links will help you comparison shop for the fuel pump and fuel pump strainer filter:

Will the above fuel pump and fuel pump strainer filter fit your particular Ford pickup (van or SUV)? Don't worry, once you get to the site they'll make sure it fits (by asking you the specifics of your particular vehicle). If it doesn't fit, they'll find you the right one.

More Ford 4.9L, 5.0L, 5.8L Tutorials

You can find a complete list of tutorials for 4.9L, 5.0L or 5.8L equipped Fords here: Ford 4.9L, 5.0L, 5.9L Index Of Articles.

Here's a small sample of the tutorials you'll find:

1. Manifold Absolute Pressure MAP Sensor Test (Ford 4.9L, 5.0L, 5.8L).
2. Ignition Coil Test -No Spark No Start Tests (Ford 4.9L, 5.0L, 5.8L).
3. How To Troubleshoot A No Start (Ford 4.9L, 5.0L, 5.8L).
4. Testing A Blown Head Gasket (Ford 4.9L, 5.0L, 5.8L).
5. How To Test Engine Compression (4.9L, 5.0L, 5.8L).
6. How To Test The Ford Mass Air Flow (MAF) Sensor (at: easyautodiagnostics.com).