LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chrysler >> 1996 >> LHS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic Tests >> Test NTC-3D - Checking Fuel Pressure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test NTC-3D - Checking Fuel Pressure

NOTE: Perform TEST NTC-2A before proceeding.
WARNING: High fuel pressure may be present in fuel lines. Open fuel system with caution. See FUEL PRESSURE RELEASE .
  1. Release fuel pressure. Connect a fuel pressure gauge to fuel rail. Turn ignition on. Using scan tool, actuate ASD fuel system. If fuel pressure is 43-53 psi (3.0-3.7 kg/cm2 ), fuel pressure is normal. Test is complete. Perform TEST VER-2A. If fuel pressure is not 43-53 psi (3.0-3.7 kg/cm2 ), go to next step.
  2. Record fuel pressure reading. If fuel pressure is more than 53 psi (3.7 kg/cm2 ), go to TEST NTC-3E. If fuel pressure is not more than 53 psi (3.7 kg/cm2 ), go to next step.
  3. Using scan tool, stop ASD fuel system actuation. Turn ignition off. Inspect fuel lines for kinks or restrictions. If kinks or restrictions are present in fuel lines, repair as necessary. Perform TEST VER-2A. If kinks or restrictions are not present, go to next step.
  4. Release fuel pressure. Remove fuel pressure gauge from fuel rail. Install fuel pressure gauge between fuel tank and fuel filter. Turn ignition on. Using scan tool, actuate ASD fuel system. If fuel pressure is at least 5 psi (0.4 kg/cm2 ) more than previously recorded pressure, replace fuel filter. Perform TEST VER-2A. If fuel pressure is not at least 5 psi (0.4 kg/cm2 ) more than previously recorded pressure, go to next step.
    WARNING: DO NOT allow fuel pressure to exceed 70 psi (4.9 kg/cm2 ) during next step.
  5. Turn ignition off. Release fuel pressure. Disconnect fuel return hose at fuel rail. Connect a 6 foot fuel hose to fuel rail. Place other end of 6 foot fuel hose into an approved 2 gallon or more capacity fuel container. Go to next step.
  6. Turn ignition on. Using scan tool, actuate ASD fuel system. Observe fuel pressure gauge while gently squeezing 6 foot fuel hose. Using scan tool, stop ASD fuel system actuation. If fuel pressure was more than 43 psi (3.0 kg/cm2 ), replace fuel pressure regulator. Perform TEST VER-2A. If fuel pressure was not more than 43 psi (3.0 kg/cm2 ), replace fuel pump and sock filter. Perform TEST VER-2A.
scientia non olet · About LEMON Manuals