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.
1986 Mitsubishi Starion ESI-RFACTORY OEM SERVICE PROCEDURE
ISC Servo
- Connect voltmeter between terminal No. 3 and injection mixer body. DO NOT disconnect ISC servo connector. Turn ignition switch to "OFF" position then to "ON" position. While keeping ignition on for at least 15 seconds, check voltmeter reading.
- If voltmeter reads 11-13 volts with ignition switch on after momentary indication of 1 volt, needle indicates 6-13 volts, ISC servo and position switch are operating normally. Turn ignition switch to "OFF" to remove voltmeter.
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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