Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 Jeep Cherokee Limited, 2D PickupFACTORY OEM SERVICE PROCEDURE
Fuel Pump Volume Test
- Perform FUEL PRESSURE TEST . If fuel pressure is okay, relieve fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Ensure area around fuel supply line and fuel rail are clean.
- Disconnect fuel supply line from fuel rail. Install Fuel Line Pressure Test Adapter Hose (6539 for 5/16" fuel lines or 6631 for 3/8" fuel lines) between disconnected fuel line and fuel rail. Remove fuel fill cap. Insert other end of hose into a graduated container suitable for gasoline.
- Connect scan tool to data link connector. Using scan tool, actuate fuel pump. Fuel volume should be as specified. See FUEL PUMP PERFORMANCE table. If fuel volume is not as specified, but fuel pump can be heard through fuel fill pipe, check for a kinked fuel line between fuel pump module and fuel rail. Repair fuel lines as necessary and retest.
- If fuel line is okay and fuel pressure is okay, but volume is low, replace fuel filter/fuel pressure regulator. On Cherokee and Wrangler, fuel filter/fuel pressure regulator is located in top of fuel tank. See FUEL FILTER/FUEL PRESSURE REGULATOR under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article. On Grand Cherokee, fuel filter/pressure regulator is located in front of fuel tank, above rear axle. See Figure. On all models, if fuel pressure and volume are low, replace fuel pump module assembly. See FUEL PUMP MODULE under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article. If fuel volume is okay, check if fuel system will hold pressure. See FUEL SYSTEM PRESSURE LEAK-DOWN TEST .
CAUTION:
DO NOT operate fuel pump longer than 7 seconds.
FUEL PUMP PERFORMANCE (1)
| Application | Pressure psi (kg/cm2 ) | Min. Vol. In 7 Sec. | ||
|---|---|---|---|---|
| All Models | 44.2-54.2 (3.1-3.7) | .5 Pt. (.25L) | ||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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