| Engine | 2.3L (140) DOHC SEFI I-4 | ||
| Horsepower | (bhp @ rpm)(1) | 135 @ 5050 (Ranger) | |
| Torque | (lbs.-ft. @ rpm)(1) | 153 @ 3700 (Ranger) | |
| Compression Ratio (to 1) Nominal | 9.7 | ||
| Type and No. of Cylinders | Dual Overhead Cam (DOHC), I-4 | ||
| Bore and Stroke (in.) | 3.44 x 3.70 | ||
| Displacement Liters (cu. in.) | 2.3L (140) | ||
| Engine Mounting | 3-Point, Rubber | ||
| CYLINDER BLOCK | Material | Aluminum | |
| CYLINDER HEAD | Type Material | Aluminum | |
| CAMSHAFT | Type | 5 Bearing | |
| Material | Cast Iron | ||
| Journal Diameter (in.) | 0.9830 | ||
| Cam Lift | Intake (in.) | 0.3110 | |
| Exhaust (in.) | 0.2913 | ||
| CAMSHAFT BEARINGS | Type | Direct - Aluminum Head | |
| Material | |||
| Total Effective Length (in.) | |||
| Total Effective Surface Area (sq. in.) | |||
| CAMSHAFT DRIVE | Type | Chain Drive | |
| CRANKSHAFT | Type | Precision Cast, 5-Bearing, Shell Molded, 8-Counter Weights | |
| Material | Cast Iron | ||
| Length, Overall (in.) | 19.3149 | ||
| Crankpin Journals | Diameter (in.) | 1.968 | |
| Length (in.) | 0.866 | ||
| Main Bearing Journals | Diameter (in.) | 2.047 | |
| Length (in.) | No. 1 | 1.024 | |
| No. 2 | 1.024 | ||
| No. 3 | 1.024 | ||
| No. 4 | 1.024 | ||
| No. 5 | 1.024 | ||
| Journal Overlap (in.) | 0.157 | ||
| MAIN BEARINGS | Type | Replaceable Insert Selective Fit | |
| Material | Aluminum | ||
| Effective Length (in.) | Nos. 1,2,4,5 | 0.7480 | |
| No. 3 (Takes Thrust) | 0.8661 | ||
| CONNECTING RODS | Type | I-Beam | |
| Material | Powdered Metal | ||
| Length Center-to-Center (in.) | 6.094 | ||
| CONNECTING ROD BEARINGS | Type | Replaceable insert Selective Fit | |
| Material | Aluminum | ||
| Effective Length (in.) | Each bearing | 0.661 | |
| PISTONS | Material | Aluminum Alloy (Mahle 124) | |
| Finish | Hard Nosed, Granite-Coated | ||
| Length (in.) | 1.632 | ||
| PISTON RINGS | Number | Three | |
| Top Compression Ring | Type | Barrel Face | |
| Material | Steel | ||
| Finish | Chrome Plated | ||
| Second Compression Ring | Type | Scraper, Taper | |
| Material | Steel | ||
| Finish | Parkerizing | ||
| Oil Control Ring | Type | Two Rail Spacer Expander | |
| Material | Steel | ||
| Finish | Chrome-Plated Rails | ||
| PISTON PINS | Type | Pressed in Rod | |
| Material | Alloy Steel, Heat Treated | ||
| Length (in.) | 2.362 | ||
| Diameter (in.) | 0.8267 | ||
| VALVE OPERATING MECHANISM | |||
| Lash Adjuster | Type | Mechanical Bucket | |
| Material | Steel with Roller | ||
| Type-Adjustment | Replace - Graded Shinless | ||
| VALVES, INTAKE | Type | Recessed Head | |
| Material | Steel, Soft Nitride | ||
| Head Diameter (in.) | 1.735 | ||
| Stem Diameter (in.) | 0.217 | ||
| Stem Oil Control | Hi-Temp., Guide Mounted Seal | ||
| Angle of Seat | 45° 00' 45° 30' | ||
| Valve Lift (in. @ Zero Lash) | 0.311 | ||
| Rotator Type | Single-Bead Key | ||
| Spring Pressure Installed (lbf.) | 38.661 | ||
| VALVES, EXHAUST | Type | Recessed Head | |
| Material | Steel, Soft Nitride | ||
| Head Diameter (in.) | 1.735 | ||
| Stem Diameter (in.) | 0.0.217 | ||
| Stem Oil Control | Hi-Temp., Guide Mounted Seal | ||
| Angle of Seat | 45° 00' 45° 30' | ||
| Valve Lift (in. @ Zero Lash) | 0.291 | ||
| Rotator Type | Single-Bead Key | ||
| Spring Pressure Installed | 38.667 | ||
| COOLING SYSTEM | |||
| Radiator | Type | Cross-Flow, Fin & Tube | |
| Thermostat | Poppet-Type, Pellet-Operated, Electric Assist | ||
| Operating Temperature | 208° F | ||
| Water Pump | Type | Centrifugal | |
| Bearing | Type | Ball & Roller | |
| Drive | Poly-Vee Belt | ||
| Capacity (gpm @ rpm) | 229L/min @ 7300 rpm, pump speed | ||
| Recirculating Bypass | Bottom Bypass when Thermostat Open | ||
| Fan | Type | 9 Blade | |
| Material | Plastic | ||
| Diameter (in.) | 15.75 | ||
| ELECTRICAL | |||
| Ignition System Aluminum (A500) | Type | 12-Volt Electronic Distributorless Ignition System (EDIS) Spark Timing Controlled by EEC-V Computer With Integrated EDIS | |
| Spark Plugs | Thread Size | 14mm — 4 | |
| No. Used | 8 | ||
| Firing Order | 1-3-4-2 | ||
| Starting Motor | Type | Positive Engagement | |
| Control | Ignition Key Switch Actuates Solenoid Relay | ||
| Alternator | Type | Diode Rectified Series Machine | |
| Battery Ground | Negative | ||
| FUEL SYSTEM | |||
| Fuel Metering System | Sequential Electronic Fuel Injection Four Port-Mounted Fuel Injectors Electronically Triggered By EEC-V Module Returnless Fuel System, Intank Pressure By-pass Valve, Fuel Rail Mounted Pressure Damper | ||
| Fuel Pump | Type | Single Electric | |
| Location | In-Tank High Pressure | ||
| Fuel Filter | Type No. Used | In-Line Large Capacity Filter — One | |
| Location | Left Frame Rail | ||
| Fuel Reservoir | Type No. Used | One | |
| Location | In-Tank | ||
| Air Cleaner | Type | Rectangular Flat Dry Element Fender Mounted | |
| LUBRICATION SYSTEM | Type | Pressure to Main, Camshaft, Lash Adjusters & Connecting Rod Bearings; Metered Pressure to Roller Follower Arms; Oil Mist to Piston Pins and Pressure Stream to Cylinder Walls | |
| Oil Pan Plug | Non-Magnetized | ||
| Oil Pump | Type Location | Trochoid Pump, Front of Black Mounted, Cartridge Style | |
| Intake | Type | Non-Floating, Screen in Sump | |
| Oil Filter | Type | Full-Flow, Disposable | |
| Attachment | Base-Mounted, Left Side | ||
| Oil Refill Capacity (qts.) | |||
| With Filter Change | 4 qts. | ||
| Without Filter Change | 3.5 qts. | ||
| Normal Oil Pressure (psi @ rpm-hot) | 55-60 @ 6000 | ||
(1)Representative 2002 Horsepower and Torque ratings adjusted to SAE J-1349 net. Ratings shown are typical and not precise for every model/engine calibration.