System Specifications

1991 Ford Ranger 2WD L4-140 2.3L SOHCSECTION System Specifications

BELT TENSIONS
New Belt (0 minutes Operation) 150-190 lbs. (667-845 N)
Used Belt Tension (10+ minutes Operation) 140-160 lbs. (622-711 N)
Allowable Minimum Tension 90 lbs. (400 N)



IDLE SPEED - Controlled Range
Automatic Transmission (DRIVE) 575-725 RPM
Manual Transmission (NEUTRAL) 645-795 RPM


TORQUE VALUES
Air Bypass Valve to Throttle Body 6-8.5 lb.ft. (8-11.5 Nm)
Air Supply Tube Clamps 15-23 in. lbs. (1.7-2.6 Nm)
Alternator Adjustment Bolt 23-34 lb.ft. (33-46 Nm)
Alternator Pivot Bolt 45-57 lb.ft. (61-77 Nm)
Idler Pulley Pivot Bolt 30-40 lb.ft. (40-55 Nm)
Idler Pulley Adjusting Bolt 30-40 lb.ft. (40-55 Nm)
Canister Mounting Bracket Bolts 6-9 lb.ft. (8-12 Nm)
Charcoal Canister Retaining Bolts 4-6 lb.ft. (4-6 Nm)
Converter Pipe to Muffler/Outlet Pipe Assembly 28-31 lb.ft. (37-42 Nm)
EGR Tube To Exh. Manifold 18-28 lb.ft. (25-35 Nm)
EGR Valve to Spacer Bolt 15-22 lb.ft. (19-29 Nm)
Exhaust Manifold to Cylinder Head 20-30 lb.ft. (27-41 Nm)
Inlet Pipe to Exhaust Manifold 25-34 lb.ft. (34-46 Nm)
Oxygen Sensor 30-35 lb.ft. (40-50 Nm)
Throttle Body to Upper Intake Manifold 6-10 lb.ft. (8-12 Nm)
Y-pipe to converter pipe 28-31 lb.ft. (37-42 Nm)

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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.