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 MANUALSCHRYSLER1987CONQUEST 2.6 H, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - ECITESTING & DIAGNOSISCOMPONENT TESTING & INSPECTIONISC SERVO MOTOR
1987 Chrysler Conquest 2.6 H, Standard
ISC Servo Motor
1987 Chrysler Conquest 2.6 H, StandardSECTION ISC Servo Motor
- Turn ignition switch to "OFF" position. Disconnect ISC servo connector. Check motor coil continuity between terminals No. 1 and 4. See Figure. Resistance should read 5-11 ohms. If resistance is 0 ohms or abnormally large, open or short circuit exists in in motor coil. Replace ISC servo assembly.
- Connect four 6-volt DC dry cells between terminals No. 1 and 4. Check that servo motor operates. If not, replace ISC servo assembly.
- Make sure there is no continuity between terminals No. 1 or 4 and injection mixer body. If continuity exists, there is a short circuit in coil. Replace ISC servo assembly.
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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.