1985-1991 C4 Delphi Electric Fuel Pump
There are a number of factors that could indicate a bad fuel pump in your Corvette. If you're experiencing engine stalling or sputtering, loss of power under load, whining noises, difficulty starting, misfires, or decreased fuel efficiency, it's possible your fuel pump could be the issue (or part of it). Any combination of these symptoms should require the inspection of your fuel system.
The fuel pump is a critical component of your Corvette's fuel delivery system as it transfers fuel from the tank to the engine at the proper pressure and volume. Without a properly functioning fuel pump, your engine will not receive the right amount of fuel at the correct pressure at the correct times. This Delphi replacement fuel pump has been expertly crafted to work as a direct replacement pump to restore proper fuel delivery in your C4.
- Fits 1985-1991 Corvettes
- 12 Volt
- Position: In-Tank
- System Pressure: 44psi
- Inlet Outside Diameter: 19mm
- Outlet Outside Diameter: 0.313"
- Length: 128mm
- Maximum Pressure: 70psi
- Terminal Type: Pin
- Connector Shape: Square
- Terminal Quantity: 2
- Connector Gender: Male
- Terminal Gender: Male
- Inlet Type: Strainer
- Outlet Type: Straight
- Gasket Material: Nitrile Rubber
- Pump Design: Turbine
- Average Current Draw: 5.0 (68)
- Average Flow Rating: 22 GPH
- Mounting Hardware Included
- Direct Replacement
NOTE: The specific diagnostic trouble codes (DTCs) related to the fuel pump in 1985-1991 Corvettes can vary based on the engine type and any specific issues detected by the onboard diagnostics. However, here are some common trouble codes that might indicate problems with the fuel pump or the fuel delivery system in general:
- Code 22: Throttle Position Sensor (TPS) Circuit Low Voltage
- Code 23: Intake Air Temperature (IAT) Sensor Circuit Low Voltage
- Code 33: Mass Air Flow (MAF) Sensor Circuit High Frequency
- Code 34: Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
- Code 36: Mass Air Flow (MAF) Sensor Burn-Off Circuit Fault
- Code 42: Electronic Spark Timing (EST) Circuit Fault - Indicates ignition system issues but can be related to fuel delivery problems indirectly
- Code 44: Lean Exhaust Indicated - Could signal fuel delivery issues causing a lean air-fuel mixture
- Code 45: Rich Exhaust Indicated - Can indicate excessive fuel or fuel delivery problems.
Remember, while these codes might hint at fuel system problems, they can also be triggered by related issues in the engine's sensors, wiring, or other components influencing fuel delivery or air-fuel mixture.
For an accurate diagnosis of a check engine light related to the fuel pump in a 1985-1991 Corvette, it's advisable to use an OBD-I scanner designed for these specific models. These scanners can retrieve the precise trouble codes stored in the Corvette's computer, providing a clearer understanding of the issue affecting the fuel pump or fuel system.
Also known under these part numbers: (For reference only)