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 MANUALSFORD1994F 250 2WD PICKUP V8-351 5.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRREMOVAL AND REPLACEMENT
1994 Ford F 250 2WD Pickup V8-351 5.8L
Removal and Replacement
1994 Ford F 250 2WD Pickup V8-351 5.8LSECTION Removal and Replacement
PCM Removal:
REMOVAL
1. Disconnect negative battery cable.
2. Loosen engine control sensor wiring (12A581) to the Powertrain Control Module (PCM) connector retainer bolt.
3. Remove engine control sensor wiring connector from PCM.
4. Loosen PCM bracket support screw.
5. Remove PCM bracket support and PCM.
INSTALLATION
1. Reverse removal procedure.
2. Tighten PCM retainer screw to 3-4 Nm (24-32 in-lb).
3. Tighten electrical connector retainer bolt to 4 Nm (32 in-lb).
NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the adaptive strategy.
RENDER: 1.0x
NO RELATED
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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.