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 MANUALSMAZDA1991MX-6 GT, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTSIDLE SPEED CONTROL (ISC) SYSTEMISC VALVE
1991 Mazda MX-6 GT, Standard
ISC Valve
1991 Mazda MX-6 GT, StandardSECTION ISC Valve
Measure resistance of Idle Speed Control (ISC) valve at 2-wire connector. See ISC RESISTANCE SPECIFICATIONS table. If not to specification, replace ISC valve.
ISC RESISTANCE SPECIFICATIONS
| Application | Testing Temperature °F (°C) | Ohms |
|---|---|---|
| MX-6 & 626 | 73 (23) | 6.3-9.9 |
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.