my Ram 1500 DT (2019-Present) won't start after running out of gas

Ram 1500 DT (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

554 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a no-start condition after running out of gas in a Ram 1500 DT. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Work in a well-ventilated area to avoid inhalation of fuel vapors.

Symptoms

•Engine cranks but does not start
•Check engine light illuminated
•Fuel gauge shows empty, even after refueling
•Strong smell of gasoline after refueling
•Possible sputtering or rough running if it starts briefly
•Battery drains quickly after multiple starting attempts

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related fault codes.
2
Check the fuel level in the tank using a dipstick or fuel gauge.
3
Inspect the fuel pump fuse and relay for continuity and proper operation.
4
Check for fuel pressure at the fuel rail using a fuel pressure gauge.
5
Inspect the fuel lines for any visible leaks or blockages.
6
Verify the functionality of the fuel pump by listening for its operation when turning the ignition key to the 'ON' position.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Fuel pressure gauge
•Socket set
•Screwdriver set
•Rag for fuel spillage

Parts Required

•Fuel pump relay (if found faulty)
•Fuel filter (if clogged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related fault codes.
2
Check the fuel level in the tank using a dipstick or fuel gauge.
3
Inspect the fuel pump fuse and relay for continuity and proper operation.
4
Check for fuel pressure at the fuel rail using a fuel pressure gauge.
5
Inspect the fuel lines for any visible leaks or blockages.
6
Verify the functionality of the fuel pump by listening for its operation when turning the ignition key to the 'ON' position.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Fuel System Inspection

Check Fuel Pump Operation:
- Reconnect the battery and turn the ignition to the "ON" position without starting the engine.
- Listen for the fuel pump priming sound from the fuel tank (a brief humming noise).
Test Fuel Pressure:
- Connect a fuel pressure gauge to the Schrader valve on the fuel rail.
- Turn the ignition to "ON" and observe the pressure reading. It should be within the manufacturer's specified range (typically around 50-60 psi for the Ram 1500).

3. Refill Fuel Tank

If the tank is empty, refill it with the appropriate fuel (91 octane recommended).
After refueling, crank the engine for 10-15 seconds to allow the fuel system to pressurize.

4. Bleeding the Fuel System

If the engine does not start, locate the fuel rail Schrader valve.
Use a small rag to catch any fuel and carefully depress the valve to release any air trapped in the fuel line.
Attempt to start the engine again.

5. Final Checks

If the engine starts, allow it to run for a few minutes and check for any leaks around the fuel lines and connections.
Recheck the OBD-II scanner for any new codes and clear existing codes if necessary.