LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1997 >> Venture LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Basic Engine Testing >> No-Start Diagnosis >> No Start - Engine Cranks Okay >> Fuel System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel System

  1. Perform On-Board Diagnostic (OBD) System Check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  . After performing OBD system check, go to next step.
  2. Turn ignition off. Install fuel pressure gauge to fuel pressure test port. Connect a fused jumper wire between battery voltage and fuel pump test terminal. Note fuel pressure. Fuel pressure should be 41-47 psi (2.9-3.3 kg/cm2 ). If fuel pressure is as specified, go to next step. If fuel pressure is not as specified, go to step 10).
  3. Disconnect jumper wire from fuel pump test terminal. Remove fuel pump relay. Connect a test light between fuel pump relay harness connector terminals No. 87 (Red wire) and No. 85 (Black/White wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 9).
  4. Turn ignition off. Connect a test light between fuel pump relay harness connector terminals No. 86 (Dark Green/White wire) and No. 85 (Black/White wire). Turn ignition on. Test light should illuminate for about 2 seconds. If test light illuminates as specified, go to step 8). If test light does not illuminate or stays illuminated for greater than 2 seconds, go to next step.
  5. Turn ignition off. Disconnect PCM harness connector. Using a test light connected to battery voltage, probe fuel pump relay circuit (Dark Green/White wire) at PCM connector. If test light illuminates, go to step 15). If test light does not illuminate, go to next step.
  6. Check for continuity in fuel pump relay circuit between PCM and fuel pump relay. If circuit is open, repair as necessary. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  . If circuit is okay, go to next step.
  7. Check fuel pump relay circuit for poor terminal connection at PCM. Replace as necessary. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  . If terminal connection is okay, go to step 20).
  8. Check for poor terminal connection at fuel pump relay. Repair as necessary. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  . If connection is okay, go to step 18).
  9. Using test light connected to ground, probe battery feed circuit (Red wire) at fuel pump relay harness connector. If test light illuminates, go to step 17). If test light does not illuminate, go to step 16).
  10. Remove fuel filler cap and listen for fuel pump operation. If fuel pump is operating, diagnose fuel system. See BASIC FUEL SYSTEM CHECKS  . If fuel pump is not operating, go to next step.
  11. Raise vehicle (leave fuel pump circuit jumpered). Disconnect fuel pump harness connector. Connect a test light between fuel pump harness connector terminals. If test light illuminates, go to step 19). If test light does not illuminate, go to next step.
  12. Connect test light to chassis ground. Probe fuel pump harness connector terminal (Gray wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 14).
  13. Locate and repair open in fuel pump ground circuit (Black wire). After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  14. Locate and repair open in fuel pump feed circuit (Gray wire). After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  15. Locate and repair short to ground in fuel pump relay PCM feed circuit (Dark Green/White wire). After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  16. Locate and repair open in ignition feed to fuel pump relay circuit (Red wire). After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  17. Locate and repair open in ground circuit to fuel pump relay (Black/White wire). After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  18. Replace fuel pump relay. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  19. Replace fuel pump. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
  20. Replace PCM. Perform PCM relearn procedures. After repairs, perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  .
scientia non olet · About LEMON Manuals