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HOMESERVICE MANUALSCHEVROLET2001MONTE CARLO SSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - BASIC DIAGNOSTIC PROCEDURESNO-START DIAGNOSISNO START - ENGINE CRANKS OKAY (1.9L)FUEL DELIVERY DIAGNOSIS
2001 Chevrolet Monte Carlo SS

Fuel Delivery Diagnosis

2001 Chevrolet Monte Carlo SSSECTION Fuel Delivery Diagnosis
  1. Install fuel pressure gauge. See BASIC FUEL SYSTEM CHECKS . Using scan tool, command fuel pump relay on and off for 3 pulses. If fuel pressure is 40-55 psi (2.8-3.9 kg/cm2 ), fuel quality may be at fault. If fuel pressure is not as specified, go to next step.
  2. If fuel pressure is not present, go to next step. If fuel pressure is present but not to specification, diagnose fuel system. See FUEL SYSTEMS in appropriate SYSTEM & COMPONENT TESTING article. Repair as necessary.
  3. Turn ignition off for at least 10 seconds. Using test light connected to ground, probe FUEL PUMP fuse (10-amp) located in instrument panel fuse block. Turn ignition on. If test light illuminates for 2 seconds and then turns off, go to next step. If test light does not illuminate, go to step  5.
  4. Check fuel pump battery feed circuit and fuel pump relay ground circuit for open or poor connections. Repair as necessary. If circuits are okay, fuel pump is faulty.
  5. Using scan tool, command fuel pump relay on and off. If relay does not click, replace relay. If relay clicks, check I/P BATT fuse (30-amp) located in underhood fuse block. Replace if necessary. If fuse is okay, repair open in fuel pump relay battery feed circuit.
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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.