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 MANUALSFORD1991RANGER 2WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSCOMPUTERS AND CONTROL SYSTEMSSYSTEM SPECIFICATIONS
1991 Ford Ranger 2WD L4-140 2.3L SOHC
System Specifications
1991 Ford Ranger 2WD L4-140 2.3L SOHCSECTION System Specifications
IDLE SPEED 475-575 RPM
TORQUE VALUES
Idle Speed Control By-Pass Air (ISC-BPA) Valve 71-102 lb. in. (8-11 N-m)
Throttle Position (TP) Sensor 25-33 lb. in. (2.8-3.8 N-m)
Distributorless Ignition System (DIS) Module 22-31 lb. in. (2.5-3.5 N-m)
Crankshaft Timing Sensor 22-31 lb. in. (2.2-3.5 N-m)
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.