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.

1997 Geo Metro BaseFACTORY OEM SERVICE PROCEDURE

Pick-Up Coil/Camshaft Position (CMP) Sensor

Measure pick-up coil/CMP sensor air gap. If gap is not .008-.016" (.20-.40 mm), adjust or replace distributor. Check pick-up coil/CMP resistance. See PICK-UP COIL RESISTANCE table.

PICK-UP COIL RESISTANCE ⁽¹⁾ - OHMS

Application

Ohms

Measured Between Terminals No. 1 & 2

Cold ⁽²⁾

185-275

Hot ⁽³⁾

240-325

⁽¹⁾	This may also be referred to as Camshaft Position (CMP) sensor.

⁽²⁾	Cold temperatures between 14-122°F (-10-50°C).

⁽³⁾	Hot temperatures between 122-212°F (50-100°C).

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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.