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 MANUALSMAZDA1991RX-7 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSIDLE SPEED & MIXTUREIDLE SPEEDMIATA, PROTEGE & 323
1991 Mazda RX-7 Base, 2D Convertible, Standard
Miata, Protege & 323
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Miata, Protege & 323
- Connect Diagnostic Tester (49B0199A0) to diagnostic connector and select SELF TEST mode, or connect jumper wire between diagnostic connector terminals TEN and GND. See Figure . Connect tachometer to diagnostic connector terminal IG(-).
- If idle speed is not within specification, rotate idle air adjusting screw on throttle body. See IDLE SPEED SPECIFICATIONS TABLE. Disconnect jumper wire.
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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.