Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1992 Acura Integra GS-RFACTORY OEM SERVICE PROCEDURE
Fuel Pressure Regulator Cut-Off Solenoid Valve (1.8L Engine)
- Fuel pressure regulator cut-off solenoid valve is located near top center of firewall. Start and warm engine to normal operating temperature. Disconnect vacuum hose No. 1 from cut-off solenoid valve. Connect a vacuum gauge to hose. If manifold vacuum is present, go to step 4).
- If manifold vacuum is not present, unplug connector from cut-off solenoid valve. If manifold vacuum is now present, go to next step. If manifold vacuum is still not present, check vacuum hoses No. 1 and 20 for leaks or obstruction. If hoses are okay, replace cut-off solenoid valve.
- If manifold vacuum is present, check for short to ground in Green/Yellow wire between ECU terminal A10 and cut-off solenoid valve connector. If wire is okay, substitute a known good ECU and retest. If problem disappears, replace original ECU.
- Unplug connector from cut-off solenoid valve. Using a fused jumper wire, connect battery positive terminal to terminal "C" (Black/Yellow wire) of cut-off solenoid valve side of connector. Connect battery negative terminal to terminal "D" (Green/Yellow wire) of cut-off solenoid valve side of connector. Start and idle engine. If manifold vacuum is present, replace cut-off solenoid valve.
- If manifold vacuum is not present, measure voltage between Black/Yellow (positive) wire and ground. If battery voltage is not present, repair open in Black/Yellow wire between fuse No. 24 and cut-off solenoid valve connector. Reconnect wire harness to cut-off solenoid valve.
- Connect test harness between ECU and vehicle harness. Start engine. Connect jumper wire from terminal wire from terminal A10 to ground. If manifold vacuum is not present, cut-off solenoid valve is okay. If vacuum is present, repair open in Green/Yellow wire between ECU and cut-off solenoid valve connector.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.