1984-1995 Honda Accord/Prelude In­Tank Fuel Pump

TEST 1. Turn the ignition OFF. 2. On the Accord, remove the screws securing the underdash fuse box to its mount. Remove the fuel cut‐off relay from the back of the fuse block and turn the block so you can see the relay mount. Use a jumper wire to connect the two left‐most terminals of the relay mount (terminal 1 to terminal 2). 3. On Preludes, remove the dashboard under cover; remove the fuel cut‐off relay from the fuse block. Use a jumper wire to connect the top 2 terminals (terminals 1 and 2) of the relay mount. 4. Disconnect the fuel line at the fuel filter in the engine compartment. Connect a pressure gauge to the fuel line. 5. Turn the ignition key ON until pressure on the gauge stabilizes, then turn the key OFF. 6. Pressure should be between 2.6‐3.3 psi (18‐22.7 kPa). If the pressure shown is below minimum, the pump must be replaced. If pressure is at least minimum, continue with the test. 7. Remove the pressure gauge from the fuel line; hold the line in a quart container. Have an asistant turn the ignition switch ON for 60 seconds, then turn it off. 8. Fuel flow in 60 seconds must be at least 25.7 oz. (760 cc). 9. If fuel pump volume is below specification, the pump must be replaced. 10. Remove the jumper wire at the fuse block. Reinstall the fuel cut‐off relay. Reinstall the fuse
Carbureted Fuel System GENERAL INFORMATION
On these vehicles, the engine management system is considered part of the emission control system. The major components include the carburetor(s), feedback control system, the air injection system, a throttle control system and the EGR system. The system consists of sensors and switches that feed information to the Electronic Control Unit (ECU), which will then operate several solenoid valves to maintain the ideal air/fuel ratio under all conditions.

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