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 MANUALSFORD1993PICKUP F250, 2D PICKUP, 5.0 N, STANDARD, M5OD-R2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 38 (ANTI-LOCK)DIAGNOSISTROUBLE CODESCODE 6 (SPEED SENSOR SIGNAL RAPIDLY CUTS IN AND OUT)
1993 Ford Pickup F250, 2D Pickup, 5.0 N, Standard, M5OD-R2
Code 6 (Speed Sensor Signal Rapidly Cuts In And Out)
1993 Ford Pickup F250, 2D Pickup, 5.0 N, Standard, M5OD-R2SECTION Code 6 (Speed Sensor Signal Rapidly Cuts In And Out)
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 1992 Ford Ranger, 1992 Ford RV Cutaway, 1992 Ford Pickup, 1992 Ford Explorer, and 1992 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
- This condition only happens while driving. Turn ignition off. Disconnect battery. Measure resistance between module connector pins No. 3 and 10, while shaking wiring harness between speed sensor and module connector. See Figure . If reading is erratic, repair loose connection in sensor leads.
- If resistance is 1000-2000 ohms and steady, remove speed sensor. Check for build up of metal chips on sensor pole. If metal chips are present, drain and clean differential. Check exciter ring for broken or chipped teeth. If no metal chips are present, remove sensor from carrier.
- Inspect exciter ring for damaged teeth. If teeth are okay and no visible lateral runout is seen, reinstall speed sensor. If teeth are damaged and lateral runout is visible, repair differential.
- To check for low or erratic sensor output, raise vehicle to allow rear wheels to spin freely. Start engine. With rear wheels rotating at 5 MPH, measure voltage between test connector pins. If voltage is 650 mV or more and steady, replace control module. If voltage is less than 650 mV and/or is erratic, replace speed sensor and test connector cap. Retest system.
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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.