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.
1982 Mazda GLC L4-1490cc 1.5LFACTORY OEM SERVICE PROCEDURE
Engine Speed Sensor: Testing and Inspection
Fig. 9 Testing vehicle speed switch:
Fig. 10 Testing vehicle speed switch:
1. Remove meter assembly from dash board then remove speedometer glass.
2. Connect test lamp, Figs 9 and 10.
3. When speedometer needle indicates less than approximately 63 mph, test lamp should illuminate.
4. When speedometer needle indicates greater than approximately 63 mph, test lamp should not illuminate.
Factory Service Tools
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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.
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