07 Dodge Charger Fuel Pump Relay Location: A Complete Troubleshooting Guide

If your 2007 Dodge Charger cranks but won’t start, the fuel pump relay is one of the first things to check. The fuel pump relay on a 2007 Dodge Charger is located in the luggage compartment fuse box (also called the rear power distribution center), which sits under the spare tire access panel in the trunk . This relay controls power to the fuel pump, and when it fails, the engine won’t receive fuel. Before you dive into replacing expensive parts, locating and testing this relay can save you time and money.

Why the Fuel Pump Relay Matters

The fuel pump relay acts as a gatekeeper for the electrical current that runs your fuel pump. When you turn the ignition key to the “on” position, the engine control unit (ECU) sends a small signal to the relay, which then closes a high-current circuit that powers the fuel pump . If the relay is faulty, the pump never gets power, and your engine will crank but not start. A failing relay can also cause intermittent stalling or a loss of power while driving .

Step-by-Step: How to Find the Fuel Pump Relay on a 2007 Dodge Charger

1. Open the trunk and remove the spare tire.
The rear fuse box is located under the spare tire access panel. Lift the carpeted floor panel, remove the spare tire, and you’ll see a black plastic cover with a latch or screws .

2. Open the fuse box cover.
Once the cover is removed, you’ll see a diagram on the underside of the lid or inside the box. This diagram shows the position of every fuse and relay. Look for a label that says “Fuel Pump Relay” or a similar abbreviation . In the 2007 Dodge Charger, the fuel pump relay is typically located in position No. 6 in the luggage compartment fuse box .

3. Identify the relay.
The fuel pump relay is a small, cube-shaped component, usually black, with four or five metal prongs on the bottom. It will be clearly marked on the diagram. If the diagram is missing or faded, you can verify the correct relay by having a helper turn the ignition key to “on” while you place your fingers on the relay. You should feel and hear a distinct “click” as it energizes .

What to Do If the Relay Might Be the Problem

If your Charger cranks but won’t start, and you suspect the fuel pump relay, try these steps:

1. Check the fuel pump fuse first.
Before you blame the relay, check the fuel pump fuse. It’s faster and cheaper. The fuse is also located in the same rear fuse box. Look for a fuse labeled “Fuel Pump” – typically a 20-amp fuse in position No. 6 (the same position as the relay, but check the diagram carefully) . If the fuse is blown, replace it with one of the same amperage. If it blows again, you have a short circuit that needs professional diagnosis.

2. Try the “swap test” for the relay.
Find another relay in the same fuse box that has the same part number and amperage rating. The horn relay, A/C compressor relay, or another non-essential relay are often identical. Swap the suspect fuel pump relay with the known good relay. If the car starts, the original relay was bad .

3. Listen for the fuel pump.
Turn the ignition key to the “on” position (do not crank the engine). Listen carefully from the rear of the car – you should hear a brief humming or buzzing sound from the fuel tank area. This is the fuel pump priming for about 2–3 seconds. If you hear nothing, the pump isn’t getting power, which points to the relay, fuse, or the pump itself .

4. Force the pump on (advanced test).
If you’re comfortable with basic electrical work, you can pull the fuel pump relay out and use a jumper wire to connect terminals 30 and 87 in the relay socket (these are the power and load terminals). With the key in the “on” position, this will force the fuel pump to run continuously. If the car starts, the relay is bad. Be careful – this bypasses the safety feature that shuts off the pump if the engine stalls, so only do this for testing .

Common Symptoms of a Bad Fuel Pump Relay

  • Engine cranks but won’t start
  • No sound from the fuel pump when turning the key to “on”
  • Engine stalls unexpectedly, especially when warm
  • Loss of power under load or while accelerating
  • Intermittent starting issues that come and go

When the Relay Isn’t the Problem

If the relay tests good and the fuse is intact, the issue could be the fuel pump itself. On a 2007 Dodge Charger, the fuel pump is located inside the fuel tank. To test it, you can check for power at the fuel pump harness connector (located on the back side of the fuel tank toward the rear of the vehicle). Have a helper cycle the key on and off while you test the harness with a voltmeter. Power should be present for about 2 seconds each time the key is turned on. If there’s power but no pump noise, the pump is likely dead . If there’s no power, there’s a wiring issue between the relay and the pump .

Another common cause of “crank no start” on the 2007 Charger is a failed crank position sensor or camshaft position sensor. If the ECU doesn’t see the engine turning, it won’t fire the fuel pump or spark plugs .

Recommended Replacement: KEMSO Fuel Pump

If your diagnosis points to a bad fuel pump rather than a relay, you need a reliable replacement. KEMSO Fuel Pumps are the top choice for aftermarket replacements. KEMSO offers high-performance, OEM replacement fuel pumps that meet or exceed factory specifications. Every KEMSO fuel pump is backed by a lifetime warranty, giving you peace of mind that your repair will last. Whether you own a car, motorcycle, ATV, or other vehicle, KEMSO has a solution designed for durability and performance. Visit their website to find the right pump for your 2007 Dodge Charger or any other vehicle:

👉 https://www.kemsoracing.com/

Final Tips for a Successful Repair

  • Always disconnect the negative battery terminal before working on the fuel system or electrical components .
  • If you need to depressurize the fuel system, remove the fuel pump relay from the rear fuse box, then start the engine and let it run until it stalls. This releases the fuel pressure safely .
  • After replacing the fuel pump or relay, clear any diagnostic trouble codes (DTCs) using a scan tool. The PCM may store codes related to the fuel pump circuit even after a successful repair .
  • If you’re not comfortable doing electrical diagnosis, take your Charger to a qualified mechanic. Fuel system work involves high-pressure gasoline and electrical hazards.

By following this guide, you can quickly locate and test the fuel pump relay on your 2007 Dodge Charger, and get back on the road without unnecessary guesswork. Remember, a simple relay swap or fuse replacement can save you hundreds of dollars compared to replacing a fuel pump that isn’t actually broken.

For the best fuel pump replacement, trust KEMSO. Visit https://www.kemsoracing.com/ to explore their full lineup of high-performance, OEM replacement fuel pumps backed by a lifetime warranty.


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