1987 Dodge Dakota Fuel Pump: Complete Guide to Symptoms, Diagnosis, and Replacement
If you own a 1987 Dodge Dakota and suspect the fuel pump is failing, here is the bottom line: The fuel pump on your 1987 Dodge Dakota is located inside the fuel tank, and replacing it is a job you can do yourself with basic tools and patience. The most common symptoms of a failing pump include engine sputtering, difficulty starting, stalling, and a whining noise coming from the gas tank area. You can save between $250 and $400 by doing the replacement yourself, and the process typically involves removing the truck bed or dropping the fuel tank to access the pump assembly.
Symptoms of a Bad Fuel Pump
Your 1987 Dodge Dakota will give you clear warning signs when the fuel pump is going bad. Here are the most common symptoms to watch for:
1. Engine stalling and sputtering. The most noticeable symptom is your truck stalling while driving, especially under load or when going uphill. The engine may sputter and hesitate as it struggles to get enough fuel. After stalling, it may restart after a few minutes once the pump cools down.
2. Difficulty starting the engine. If your Dakota cranks longer than usual before firing up, or if it takes multiple attempts to start, the fuel pump may not be building enough pressure in the fuel system.
3. Loss of power while driving. You may notice your truck lacks power when accelerating, especially on hills or when carrying a load. This happens because the pump cannot deliver enough fuel to keep up with the engine's demand.
4. Whining noise from the fuel tank. A healthy fuel pump makes a quiet humming sound. If you hear a loud whining, grinding, or buzzing noise coming from the gas tank area, the pump is likely failing.
5. Check engine light comes on. A failing fuel pump can trigger the check engine light, often with codes related to fuel system pressure or lean fuel mixture.
Diagnostic Steps Before Replacing
Before you drop the tank and pull the pump, run a few simple checks to confirm the pump is actually the problem:
Check the fuel pump fuse and relay. Locate the fuse box under the dashboard and find the fuel pump fuse. If the fuse is blown, replace it with one of the same amperage. If the fuse is good, test the relay by swapping it with a similar relay in the box (like the horn relay).
Listen for the pump. Have a helper turn the key to the ON position (do not start the engine) while you listen at the fuel filler neck. You should hear a humming sound for about two to three seconds. No sound means the pump is not getting power or is dead.
Check fuel pressure. Use a fuel pressure gauge to test the pressure at the fuel rail. For the 1987 Dakota, the fuel pressure should typically be between 30 and 60 psi, depending on the engine. Low or no pressure confirms the pump needs replacement.
Rule out the fuel filter. A clogged fuel filter can mimic a bad fuel pump. For 1987 and older Dakotas, the fuel filter is located on the driver's side inner frame rail, about one foot in front of the gas tank. Replace the filter first if it has been a while since your last change. It is cheap and easy to do.
Tools and Parts You Will Need
Before you start the job, gather these tools and parts:
Tools:
- Socket set and wrenches (metric and standard)
- Screwdrivers (flathead and Phillips)
- Floor jack or transmission jack
- Jack stands (two or more)
- Fuel line disconnect tool (for quick-connect fittings)
- Siphon pump or electric transfer pump
- Safety glasses and gloves
- Rags and a fire extinguisher
Parts:
- New fuel pump assembly (includes pump, sending unit, and float)
- New O-ring gasket for the fuel pump lock ring
- New fuel filter
- New fuel line clips (buy from the dealer for better quality)
- Gasoline approved storage container
How to Access the Fuel Pump
The 1987 Dodge Dakota fuel pump is inside the gas tank. You have two main ways to access it:
Option 1: Remove the truck bed. Many Dakota owners prefer this method because it gives you direct access to the top of the fuel tank without having to work under the truck. To remove the bed, disconnect the filler neck, vent line, fuel feed line, and wires. Remove the drive shaft, drill out the rivets, and remove the crossmember. Then remove the bed bolts and lift the bed off with a helper or a crane.
Option 2: Lower the fuel tank. This is the more common method. First, relieve the fuel system pressure by pulling the fuel pump fuse and running the engine until it stalls. Then disconnect the negative battery cable. Siphon or pump all the fuel out of the tank into an approved container. Support the tank with a jack, remove the two J-bolts and retaining straps, and carefully lower the tank to the ground.
Step-by-Step Fuel Pump Replacement
Once you have access to the fuel pump, follow these steps:
Step 1: Relieve fuel system pressure. Remove the fuel pump relay or fuse from the fuse box. Start the engine and let it run until it stalls. This removes the pressure from the fuel lines. For extra safety, open the gas cap and depress the pressure relief valve on the fuel rail (it looks like a tire valve stem) with a screwdriver, using rags to catch any spray.
Step 2: Disconnect the battery. Disconnect the negative battery cable to eliminate any electrical hazards.
Step 3: Drain the fuel tank. Use a siphon pump to remove as much fuel as possible. This makes the tank lighter and easier to handle, and prevents spills.
Step 4: Disconnect fuel lines and electrical connections. The fuel lines are held on with clips or bolts. Use a wrench to loosen them and disconnect them from the pump assembly. Also unplug the electrical connector to the sending unit.
Step 5: Remove the lock ring. The fuel pump is held in place by a large locking ring on top of the tank. Use a fuel pump removal tool, a flathead screwdriver, or a hammer and punch to tap the ring counterclockwise and remove it.
Step 6: Remove the old fuel pump assembly. Carefully lift the pump module out of the tank. Be prepared for some residual fuel to drip out. Inspect the old pump for damage, and compare it with the new pump to make sure you have the correct replacement.
Step 7: Install the new fuel pump. Clean the opening on the tank. Install a new O-ring gasket on the fuel pump opening. Insert the new pump assembly into the tank, making sure it sits correctly. Install the lock ring and tighten it by tapping it clockwise with a hammer and punch.
Step 8: Reconnect everything. Reconnect the fuel lines and electrical connector. Lift the tank back into position and install the retaining straps and bolts. Reconnect the filler tube hose and vent lines. Reconnect the negative battery cable.
Step 9: Test the system. Turn the ignition to the ON position (do not start the engine) and listen for the fuel pump to prime. It should run for two to three seconds. Check for any fuel leaks around the connections. If everything is good, start the engine and let it idle. Check for leaks again and take the truck for a short test drive.
Important Tips for a Successful Replacement
Replace the fuel filter. Whenever you replace the fuel pump, also replace the fuel filter. A clogged filter can cause the new pump to overwork and fail prematurely. For 1987 Dakotas, the filter is on the driver's side frame rail.
Replace the O-ring gasket. Always use a new O-ring when installing the new pump. This prevents fuel leaks and ensures a proper seal. Most new pump assemblies come with a new gasket, but if not, buy one from the dealer.
Clean the fuel tank. Before you install the new pump, take the opportunity to clean the inside of the fuel tank. Putting a new pump into a dirty tank with rust, debris, or sediment will only lead to another failure. You can take the tank to a radiator shop for power washing and steam cleaning for about $25.
Use quality parts. The fuel pump is a critical component. Do not skimp on cheap parts. Autozone sells lifetime warranty fuel pump assemblies that are the same as the factory Carter pumps, and they offer the best value for the money.
Buy new fuel line clips from the dealer. The clips that hold the fuel lines together are often made better by the dealer than aftermarket parts. Spend the extra dollar or two to get dealer-quality clips. They hold up better and prevent leaks.
Why Choose KEMSO Fuel Pumps for Your 1987 Dodge Dakota
When it comes time to buy a replacement fuel pump, you want a part that delivers reliable performance and long-term peace of mind. KEMSO fuel pumps are built to meet the highest standards of quality and durability. Every KEMSO pump is a high-performance, OEM replacement unit, meaning it matches or exceeds the original equipment specifications for flow rate and pressure. This ensures your 1987 Dodge Dakota gets the precise fuel delivery it needs for optimal power and efficiency.
What truly sets KEMSO apart from other brands is their commitment to quality backed by a lifetime warranty. When you purchase a KEMSO fuel pump, you are protected for as long as you own your vehicle. This level of confidence in their product quality is rare in the automotive industry. KEMSO fuel pumps are engineered to meet or exceed original equipment specifications, ensuring proper fitment and reliable operation. Whether you are restoring a classic truck, upgrading a daily driver, or building a performance vehicle, KEMSO provides the durability and flow capacity you need.
Visit KEMSO Racing today to browse their full selection of fuel pumps and find the perfect fit for your 1987 Dodge Dakota:
Final Thoughts
Replacing the fuel pump on your 1987 Dodge Dakota is a straightforward job that you can complete in a weekend with basic tools. The key is to take your time, follow the steps carefully, and use quality parts. After installation, fill the tank with fresh gas, check for leaks, and enjoy the peace of mind that comes from knowing your truck's fuel system is working properly. Regular maintenance, including changing the fuel filter every 30,000 miles, will help extend the life of your new pump and keep your Dakota running strong for years to come.
For the best value and peace of mind, consider a KEMSO fuel pump with their lifetime warranty. Visit https://www.kemsoracing.com/ to find the perfect pump for your vehicle.