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 MANUALSPLYMOUTH1985CONQUEST L4-2555CC 2.6L SOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONSUB-SYSTEM DESCRIPTIONIDLE SPEED CONTROL SYSTEM
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Idle Speed Control System
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Idle Speed Control System
Crank throttle angle, deceleration throttle angle and engine idle speed are controlled by an electric motor driven actuator which changes throttle angle by acting as a moveable idle stop. The ISC actuator is controlled by the ECU by providing appropriate signals to adjust throttle angle or idle speed for particular operating conditions. Electronic components for the ISC system are integral with the ECU.
RENDER: 1.0x
NO RELATED
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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.