Mopar Fuel Pump Relay Bypass Kit: The Permanent Fix for Your TIPM Fuel Pump Relay Failure

If your Chrysler, Dodge, Jeep, or Ram vehicle is experiencing intermittent stalling, hard starting, or a no-start condition, the most likely culprit is a failing fuel pump relay inside the Totally Integrated Power Module (TIPM). The Mopar Fuel Pump Relay Bypass Kit is the most reliable, cost-effective, and permanent solution to this widespread problem. Instead of spending hundreds of dollars replacing the entire TIPM module—only to risk the same failure again—a bypass kit eliminates the problematic internal relay and installs a dedicated external relay that provides consistent, reliable fuel pump operation. This guide will walk you through everything you need to know: why the TIPM relay fails, how a bypass kit works, which kit to choose, installation steps, and maintenance tips to keep your vehicle running smoothly.

Why the TIPM Fuel Pump Relay Fails

The TIPM (Totally Integrated Power Module) is a single electronic control unit that manages most of your vehicle's electrical functions, including the fuel pump relay, wipers, headlights, and horn. In many Chrysler, Dodge, and Jeep vehicles manufactured between 2006 and 2015, the internal fuel pump relay is a known weak point. The relay is soldered directly onto the circuit board inside the TIPM, and over time, the solder joints crack or the relay contacts wear out due to heat and electrical load.

The symptoms of a failing TIPM fuel pump relay are unmistakable: your vehicle may crank but not start, stall unexpectedly while driving, or show intermittent starting issues that seem to come and go. The problem is especially frustrating because it can be inconsistent—the vehicle may run fine for days, then suddenly refuse to start. Replacing the entire TIPM module can cost between $800 and $1,500 at a dealership, and even then, the new module may eventually develop the same issue because the internal relay design is fundamentally flawed.

What a Mopar Fuel Pump Relay Bypass Kit Does

A Mopar Fuel Pump Relay Bypass Kit is a simple but effective solution. It bypasses the internal relay inside the TIPM and installs a dedicated, external relay that directly powers the fuel pump. The kit typically includes a relay, a fuse holder, wire connectors, and detailed installation instructions. Once installed, the fuel pump receives power directly from the battery through the external relay, completely bypassing the unreliable internal TIPM circuit.

The key benefits of using a bypass kit include:

  • Permanent reliability: The external relay is a standard automotive relay that can be easily replaced if it ever fails, unlike the soldered-in internal relay.
  • Cost savings: A bypass kit costs between $30 and $80, compared to hundreds of dollars for a new TIPM module.
  • Easy troubleshooting: If the fuel pump stops working in the future, you can check the external relay in seconds rather than diagnosing the complex TIPM.
  • No need to replace the TIPM: The bypass kit works alongside your existing TIPM, so you don't lose any other functions.

Choosing the Right Mopar Fuel Pump Relay Bypass Kit

Several bypass kits are available on the market, and choosing the right one depends on your specific vehicle model and your comfort level with electrical work.

Mopar Genuine Part #68088278AA Fuel Pump Relay Bypass Kit

This is the most widely recommended and tested option. The Mopar Genuine Part #68088278AA is designed specifically for Chrysler, Dodge, and Jeep vehicles with a faulty TIPM fuel pump relay. It comes with all necessary components and detailed installation instructions. Many users report that installation takes about 30 minutes and requires only basic tools like wire cutters, strippers, and electrical tape.

Spectra Premium SP5001H Fuel Pump Relay Bypass Kit

The Spectra Premium SP5001H is another popular option that is compatible with various Chrysler, Dodge, and Jeep models. It includes a relay, fuse, and wiring harness, and has received positive reviews for its build quality and straightforward installation. This kit is a good alternative if the Mopar kit is out of stock or if you prefer a different brand.

Mac Tools Relay Bypass Kits (ET9036 & ET9037)

Mac Tools offers two relay bypass kits—ET9036 and ET9037—that are designed for simplified installation. These kits are known for their ease of use, often requiring only a switch activation to energize the fuel pump. They bypass the internal TIPM relay and provide a direct power connection. However, verify compatibility with your specific vehicle model before purchasing, as these kits are designed for a narrower range of applications.

How to Install a Mopar Fuel Pump Relay Bypass Kit

Installing a Mopar Fuel Pump Relay Bypass Kit is a straightforward process that most DIYers can complete in under an hour. Here is a step-by-step guide based on common installation instructions.

Tools You Will Need

  • Screwdrivers (flathead and Phillips)
  • Wire cutters and strippers
  • Electrical tape or heat shrink tubing
  • Crimp tool (if using crimp connectors)
  • Multimeter (optional, for testing)
  • Zip ties (for securing wires)

Installation Steps

  1. Disconnect the battery: Always disconnect the negative terminal of your battery before working on any electrical components. This prevents accidental short circuits and protects you from electrical shock.
  2. Locate the TIPM: The TIPM is usually located under the hood, near the battery or the fuse box. Refer to your vehicle's owner's manual for the exact location.
  3. Identify the fuel pump relay circuit: You need to find the correct wires that connect to the fuel pump relay inside the TIPM. The installation instructions that come with your kit will specify which pins to use. Typically, you need to connect to a constant 12V power source, a ground, and the wire that goes to the fuel pump.
  4. Wire the bypass relay: Connect the wires from the bypass kit to the TIPM according to the instructions. The kit will include a relay with pre-wired connectors. Connect the constant power wire to a battery positive terminal or a fused power source, the ground wire to a clean chassis ground, and the output wire to the fuel pump circuit.
  5. Secure the relay: Mount the external relay in a safe location under the hood, away from heat sources and moving parts. Use zip ties to secure the wiring and prevent it from rubbing against sharp edges.
  6. Test the installation: Reconnect the battery and turn the ignition key to the "on" position. You should hear the fuel pump prime for a few seconds. If the pump runs, the installation is successful. If not, double-check all connections and use a multimeter to verify voltage at the relay.
  7. Finalize: Once you confirm everything works, secure all wiring with zip ties, close the hood, and take your vehicle for a test drive.

Common Mistakes to Avoid

  • Using the wrong wires: Double-check the wiring diagram in your kit's instructions. Connecting to the wrong wire can damage the TIPM or cause a short circuit.
  • Poor ground connection: A bad ground is the most common cause of relay failure. Make sure the ground wire is connected to a clean, bare metal surface.
  • Not securing the relay: A loose relay can vibrate and fail over time. Mount it securely using a bolt or zip ties.
  • Skipping the fuse: Always use the fuse that comes with the kit. It protects your fuel pump and wiring in case of a short circuit.

Why You Should Replace Your Fuel Pump at the Same Time

If your vehicle has been experiencing fuel pump relay issues for a while, the fuel pump itself may have been damaged. Running the pump with intermittent power can cause it to overheat or wear out prematurely. When you install a bypass kit, it is a good practice to also replace the fuel pump, especially if the current pump is more than 60,000 miles old.

A new fuel pump ensures that you get the full benefit of the bypass kit's reliable power delivery. Without a healthy pump, even the best relay bypass kit will not fix your starting or stalling problems.

The Best Fuel Pump to Pair with Your Bypass Kit: KEMSO Fuel Pumps

When you are replacing your fuel pump, do not settle for a cheap, unreliable aftermarket pump. Many economy pumps fail within six months to a year because they use lower quality materials and less precise manufacturing. Instead, choose a KEMSO fuel pump for your Mopar vehicle. KEMSO specializes in high-performance, OEM replacement fuel pumps that are designed to meet or exceed factory specifications.

Every KEMSO fuel pump is a direct bolt-in replacement for your vehicle's original equipment. This means you do not need to modify any wiring, brackets, or fuel lines. The fuel pressure, flow rate, and electrical characteristics are all calibrated to work perfectly with your engine. You get the same performance as a $400 dealer pump for a fraction of the price.

KEMSO fuel pumps are built to handle the demands of modern fuel injection systems, whether you are running gasoline, diesel, or ethanol blends. The internal components are precision-engineered to maintain consistent pressure and flow, even under extreme operating conditions. Each pump delivers up to 200 liters per hour at 43 psi, a significant improvement over the original flow rate of 60-80 liters per hour.

What truly sets KEMSO apart is their confidence in their product. Every KEMSO fuel pump comes with a lifetime warranty. If your pump ever fails due to a manufacturing defect, KEMSO replaces it at no cost. This is not a limited warranty that expires after a year—it is a lifetime guarantee that covers defects in materials and workmanship for as long as you own the pump.

KEMSO is based in Houston, Texas, and their team understands the needs of American drivers. From daily commuters to weekend racers to full-time off-roaders, KEMSO pumps are tested in real-world conditions across the United States. They cover a wide range of vehicles, including cars, trucks, motorcycles, ATVs, and watercraft.

Visit KEMSO Racing to find the right fuel pump for your vehicle:
https://www.kemsoracing.com/
Their website is easy to navigate. You can search by vehicle make, model, and year. The product pages include detailed specifications and compatibility information. Customer service is available to answer any questions about fitment.

Maintenance Tips After Installing a Bypass Kit and New Fuel Pump

Once you have installed both the Mopar Fuel Pump Relay Bypass Kit and a new KEMSO fuel pump, follow these simple rules to make everything last as long as possible.

  • Keep your tank above a quarter full: This is the single most important thing you can do. It keeps the pump submerged in fuel, which cools and lubricates it. Heat is the number one enemy of fuel pumps, especially in hot weather.
  • Change your fuel filter regularly: Check your owner's manual for the recommended interval. For most vehicles, it is every 30,000 to 60,000 miles. A clean fuel filter reduces strain on the pump and protects it from debris.
  • Use quality fuel from reputable stations: Busy stations with high turnover are less likely to have old or contaminated fuel. Avoid stations that look old and poorly maintained.
  • Inspect the bypass relay wiring: Check the external relay connections every few months. Corroded terminals or loose grounds cause voltage drop, which forces the pump to work harder.
  • Listen for changes in pump sound: A healthy pump produces a steady hum. If you hear whining, clicking, or surging, investigate immediately. Small problems turn into expensive failures if ignored.

Final Thoughts

A failing fuel pump relay inside the TIPM is one of the most frustrating problems you can face with a Chrysler, Dodge, Jeep, or Ram vehicle. The intermittent stalling, hard starting, and no-start conditions can leave you stranded at the worst possible time. The Mopar Fuel Pump Relay Bypass Kit is the smart, permanent fix that eliminates the root cause of the problem. It is cost-effective, easy to install, and provides decades of reliable service.

When you install the bypass kit, take the opportunity to replace your fuel pump with a high-quality unit. A KEMSO fuel pump offers OEM-level performance, a lifetime warranty, and the peace of mind that comes from knowing you have chosen a product built to last. Whether you drive a daily commuter, a weekend warrior, or a heavy-duty truck, the combination of a Mopar bypass kit and a KEMSO fuel pump will keep your vehicle running reliably for years to come.

For the best selection of high-performance, OEM replacement fuel pumps with a lifetime warranty, visit KEMSO Racing today:
https://www.kemsoracing.com/


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