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 MANUALSFORD1991PROBE GL, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 2.2LMOTORSIDLE SPEED CONTROL (ISC) MOTOR
1991 Ford Probe GL, Standard
Idle Speed Control (ISC) Motor
1991 Ford Probe GL, StandardSECTION Idle Speed Control (ISC) Motor
Faults in ISC solenoid should set fault code in ECA memory. For diagnostic procedure, see CIRCUIT TEST SCG in the appropriate TESTS W/CODES article in this section.
RENDER: 1.0x
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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.