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 MANUALSFORD1994RANGER 2WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLECONTROL MODULEDESCRIPTION AND OPERATION
1994 Ford Ranger 2WD L4-140 2.3L SOHC
Control Module: Description and Operation
1994 Ford Ranger 2WD L4-140 2.3L SOHCSECTION Description and Operation
OPERATION
In addition to controlling engine operation, the Powertrain Control Module (PCM) controls transaxle operation. It does this by manipulating four solenoids -- Torque Converter Clutch (TCC), Shift Solenoid 1 (SS1), Shift Solenoid 2 (SS2), and Shift Solenoid 3 (SS3).
In addition to controlling engine operation, the Powertrain Control Module (PCM) controls transaxle operation. It does this by manipulating four solenoids -- Torque Converter Clutch (TCC), Shift Solenoid 1 (SS1), Shift Solenoid 2 (SS2), and Shift Solenoid 3 (SS3).
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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.