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.
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HOMESERVICE MANUALSVOLVO1991740 BASE, 4D WAGON, AUTOMATIC, AW70LREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSFUEL SYSTEMFUEL CONTROLCOLD START VALVE
1991 Volvo 740 Base, 4D Wagon, Automatic, AW70L
Cold Start Valve
1991 Volvo 740 Base, 4D Wagon, Automatic, AW70LSECTION Cold Start Valve
- Disconnect cold start valve harness connector. Connect ohmmeter leads across cold start valve terminals.
- Ohmmeter should indicate 10 ohms. If reading is not 10 ohms, replace cold start valve.
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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.