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.
1990 Volvo 760 GLE, AW71FACTORY OEM SERVICE PROCEDURE
Idle Air Control Valve
- Turn ignition switch to OFF position. Disconnect ECU connector. Fuel injection ECU is located on right side of instrument panel, under kick panel. Push out clip and disconnect ECU connector.
- Remove cover from ECU connector to expose pin identification numbers. Visually inspect all pin connector sleeves to ensure all pins are at same height.
- On 240, 240 DL, 740 GL and 740 GLE, connect an ohmmeter between fuel ECU connector pins No. 9 and No. 33. Ohmmeter should read 8 ohms.
- On 740 Turbo, 760 Turbo and 760 GLE, connect ohmmeter between fuel ECU connector pins No. 9 and No. 10, and then between pins No. 9 and No. 23. Ohmmeter should read 20 ohms in each reading.
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.
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