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 MANUALSJEEP1987CHEROKEE LIMITEDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSTESTINGSPEED SENSOR TEST
1987 Jeep Cherokee Limited
Speed Sensor Test
1987 Jeep Cherokee LimitedSECTION Speed Sensor Test
- Disconnect wire harness connector at speed sensor. Connect a voltmeter (set on low AC scale) to wire terminals from speed sensor.
- Raise front and rear wheels of vehicle off ground and support vehicle with safety stands. Run engine (wheels spinning freely) at 30 MPH and note voltage.
- Voltage should be approximately .9 volts. Increases of .1 volts per each 10 MPH increase in speed should also be noticed. Turn off engine and stop wheels. Lower vehicle. Connect speed sensor wire harness. Lower vehicle.
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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.