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 MANUALSMAZDA1993MX-3 V6-1844CC 1.8L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORADJUSTMENTS
1993 Mazda MX-3 V6-1844cc 1.8L DOHC
Throttle Position Sensor: Adjustments
1993 Mazda MX-3 V6-1844cc 1.8L DOHCSECTION Adjustments
***UPDATED BY TSB #F00194, MARCH 9, 1994
1. Unplug sensor connector.
2. Connect an ohmmeter across terminals IDL and E as shown.
3. Insert 0.006 in (0.15 mm) feeler gauge between throttle stopper screw and throttle valve lever. Meter should show continuity.
4. Insert 0.020 in (0.5 mm) feeler gauge between throttle stopper screw and throttle valve lever. Meter should show no continuity.
5. If not as specified, loosen sensor mounting screws.
6. Insert 0.006 in (0.15 mm) feeler gauge between throttle stopper screw and throttle valve lever. Rotate sensor clockwise approximately 30°, then rotate back counterclockwise until there is continuity.
7. Replace gauge with 0.020 in (0.50 mm) feeler gauge and check that there is no continuity.
6. Tighten mounting screws to 14 - 20 in lb (1.6 - 2.3 Nm) and plug in connector.
Checking Throttle Sensor Adjustment:
Adjusting Throttle Sensor:
1. Unplug sensor connector.
2. Connect an ohmmeter across terminals IDL and E as shown.
3. Insert 0.006 in (0.15 mm) feeler gauge between throttle stopper screw and throttle valve lever. Meter should show continuity.
4. Insert 0.020 in (0.5 mm) feeler gauge between throttle stopper screw and throttle valve lever. Meter should show no continuity.
5. If not as specified, loosen sensor mounting screws.
6. Insert 0.006 in (0.15 mm) feeler gauge between throttle stopper screw and throttle valve lever. Rotate sensor clockwise approximately 30°, then rotate back counterclockwise until there is continuity.
7. Replace gauge with 0.020 in (0.50 mm) feeler gauge and check that there is no continuity.
6. Tighten mounting screws to 14 - 20 in lb (1.6 - 2.3 Nm) and plug in connector.
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.