INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This article may be used for quick reference when you are familiar with proper adjustment procedures and only need a specification.
CAPACITIES
| Load Test (Amps) | (1) CC Rating @ 0°F (Amps) | (2) Reserve Capacity Rating (Min.) |
|---|
| 200 | 500 | 110 |
| 250-300 | 600 | 120 |
| 315 | 685 | 125 |
| 375 | 750 | 125 |
| 405 | 810 | 133 |
| (1) Cold Cranking (CC) rating is current a battery can deliver for 30 seconds and maintain a terminal voltage of 7.2 volts or greater at specified temperature. (2) Reserve capacity rating is length of time a battery can deliver 25 amps and maintain a minimum terminal voltage of 10.5 volts at 80°F (27°C). |
| (1) | Cold Cranking (CC) rating is current a battery can deliver for 30 seconds and maintain a terminal voltage of 7.2 volts or greater at specified temperature. |
| (2) | Reserve capacity rating is length of time a battery can deliver 25 amps and maintain a minimum terminal voltage of 10.5 volts at 80°F (27°C). |
| Application | Specification |
|---|
| Automatic Transmission (1) |
| Estimated Service Refill |
| Dakota |
| 42RH | 5.2 Qts. (4.9L) |
| Ram Pickup |
| 42RH | 5.2 Qts. (4.9L) |
| Ram Van/Wagon |
| 32RH | 5.2 Qts. (4.9L) |
| 42RH | 5.2 Qts. (4.9L) |
| Overhaul Refill (Includes Torque Converter) (1) |
| Dakota |
| 42RH & 46RH | 9.5-10.9 Qts. (9.0-10.4L) |
| Ram Pickup |
| 42RH | 8.5-10.9 Qts. (8.0-10.4L) |
| Ram Van/Wagon |
| 32RH | 8.6 Qts. (8.1L) |
| 42RH | 10.2 Qts. (9.7L) |
| Cooling System (Includes Recovery Tank) |
| Dakota | 14.0 Qts. (13.2L) |
| Ram Pickup | 20.0 Qts. (18.9L) |
| Ram Van/Wagon | 14.6 Qts. (13.8L) |
| Crankcase (Includes Filter) |
| Dakota | 4.0 Qts. (3.8L) |
| Ram Pickup | 4.0 Qts. (3.8L) |
| Ram Van/Wagon | 3.5 Qts. (3.3L) |
| Front Axle |
| Dakota (2) |
| 7 1/4" | 3.0 Pts. (1.4L) |
| Ram Pickup (3) |
| Dana 44 | 5.6 Pts. (2.6L) |
| Dana 60 | 6.3 Pts. (3.0L) |
| Manual Transmission |
| Dakota |
| AX-15 Getrag | (4) 3.3 Qts. (3.1L) |
| Ram Pickup |
| NV3500 | (5) 2.1 Qts. (2.0L) |
| Power Steering Fluid (6) |
| Dakota 2WD | 1.7 Pts. (0.8L) |
| Dakota 4WD | 2.5 Pts. (1.2L) |
| Except Dakota | 2.7 Pts. (1.3L) |
| Power Takeoff (PTO) Adapter |
| Ram Pickup (NV021) | 4.6 Pts. (2.2L) |
| Rear Axle (7) |
| Dakota |
| 7 1/4" | 3.0 Pts. (1.4L) |
| 8 1/4" | 4.4 Pts. (2.1L) |
| Ram Pickup (3) |
| 8 1/4" | 4.4 Pts. (2.1L) |
| 9 1/4" | 4.8 Pts. (2.3L) |
| Dana 60 (2WD) | 6.3 Pts. (3.0L) |
| Dana 60 (4WD) | 7.3 Pts. (3.4L) |
| Dana 70 (2WD) | 7.0 Pts. (3.3L) |
| Dana 70 (4WD) | 7.8 Pts. (3.6L) |
| Dana 80 (2WD) | 6.8 Pts. (3.3L) |
| Dana 80 (4WD) | 10.1 Pts. (4.8L) |
| Ram Van/Wagon |
| 8 1/4" | 4.4 Pts. (2.1L) |
| 9 1/4" | 4.8 Pts. (2.3L) |
| Dana 60 | 6.3 Pts. (3.0L) |
| Transfer Case (1) |
| Dakota |
| NV231 | 2.5 Pts. (1.2L) |
| Ram Pickup |
| NV231 | 2.5 Pts. (1.2L) |
| NV241 SD | 4.7 Pts. (2.2L) |
| (1) Mopar ATF Plus type 7176 recommended, if not available use Mopar Dexron II ATF. (2) On Dakota, use SAE 80W-90 with MIL-L-2105C and API GL-4 specification. (3) On Ram Pickup, use Mopar Thermal stable Multi-Purpose Gear Lubricant SAE 80W-90 with API GL-5 specification. (4) Use SAE 75W-90 API GL-5 fluid or equivalent. (5) Use Mopar manual transmission fluid P/N 4761526 only. (6) Use only Mopar power steering fluid or equivalent. DO NOT use Automatic Transmission Fluid (ATF). (7) Use SAE 80W-90 with MIL-L-2105C and API GL-5 specification. Add one container of friction modifier to Trac-Lok or Power-Lok limited slip differential when gear lubricant is changed. |
| (1) | Mopar ATF Plus type 7176 recommended, if not available use Mopar Dexron II ATF. |
| (2) | On Dakota, use SAE 80W-90 with MIL-L-2105C and API GL-4 specification. |
| (3) | On Ram Pickup, use Mopar Thermal stable Multi-Purpose Gear Lubricant SAE 80W-90 with API GL-5 specification. |
| (4) | Use SAE 75W-90 API GL-5 fluid or equivalent. |
| (5) | Use Mopar manual transmission fluid P/N 4761526 only. |
| (6) | Use only Mopar power steering fluid or equivalent. DO NOT use Automatic Transmission Fluid (ATF). |
| (7) | Use SAE 80W-90 with MIL-L-2105C and API GL-5 specification. Add one container of friction modifier to Trac-Lok or Power-Lok limited slip differential when gear lubricant is changed. |
SERVICE INTERVALS & SPECIFICATIONS
| Component | Miles/Months |
|---|
| Dakota, Ram Pickup 1500 & 2500 & Ram Van/Wagon |
| Air Filter | 30,000/24 |
| Auto. Trans. Fluid, Filter & Adjust Bands | 37,500/30 |
| Chassis Lube | 7500/6 |
| Coolant | (1) 52,500/36 |
| Man. Trans. Fluid | 37,500/30 |
| Engine Oil | 7500/6 |
| Oil Filter | (2) 15,000/12 |
| PCV Valve | 60,000/60 |
| Spark Plugs | 30,000/24 |
| Transfer Case | 37,500/30 |
| (1) Change coolant every 30,000 miles or 24 months thereafter. (2) If mileage is less than 7500 miles each 12 months, replace filter at each oil change. |
| (1) | Change coolant every 30,000 miles or 24 months thereafter. |
| (2) | If mileage is less than 7500 miles each 12 months, replace filter at each oil change. |
REPLACEMENT INTERVALS (LIGHT-DUTY SERVICE)
| Component | Miles/Months |
|---|
| Ram Pickup 2500 & Ram Van/Wagon |
| Air Filter & Air Pump Filter | 24,000/24 |
| Auto. Trans. Fluid, Filter & Adjust Bands | 24,000/24 |
| Chassis Lube | 6000/6 |
| Coolant | 54,000/54 |
| EGR Valve | (1) 60,000/60 |
| Fuel Filter | As Necessary |
| Man. Trans. Fluid | 36,000/36 |
| Engine Oil | 6000/6 |
| Oil Filter | 12,000 |
| PCV Valve | 60,000/60 |
| Spark Plugs | 30,000/30 |
| Transfer Case | 36,000/36 |
| Wheel Bearings | 24,000/24 |
| (1) Clean EGR passages when replacing EGR valve. |
| (1) | Clean EGR passages when replacing EGR valve. |
REPLACEMENT INTERVALS (HEAVY-DUTY SERVICE)
Note. Accessory drive belts for 3.9L engines are equipped with an automatic belt tensioner and no adjustment is required.
| CAUTION | DO NOT attempt to check belt tension using a belt tension gauge on vehicles equipped with an automatic belt tensioner. |
ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open.
| Application | Specification |
|---|
| Compression Ratio | 9.1:1 |
| Minimum Compression Pressure | 100 psi (690 kPa) |
| Maximum Variation Between Cylinders | 25 psi (1172 kPa) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
All engines are equipped with hydraulic lifters and do not require valve adjustment. Valve clearance is zero lash with engine at operating temperature.
IGNITION COIL
| Application | Primary | Secondary |
|---|
| Diamond | 0.97-1.18 | 11,300-15,300 |
| Toyodenso | 0.95-1.20 | 11,300-13,300 |
IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| All Wires | 250-1000 Per Inch |
| All Wires | 3000-12,000 Per Foot |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Plug No. | Gap - In. (mm) |
|---|
| All Models | (1) (2) RC12YC | .035 (.89) |
| (1) Tighten to 30 ft. lbs. (41 N.m) (2) Champion spark plug part number. |
| (1) | Tighten to 30 ft. lbs. (41 N.m) |
| (2) | Champion spark plug part number. |
Firing Order & Distributor Rotation (3.9L). Scheme 1
Scheme 1: Firing Order & Distributor Rotation (3.9L)
IGNITION TIMING
Note. Always refer to Emission Control Label in engine compartment before attempting service. If manual and label differ, always use emission label specifications.
| Application | (1) Degrees BTDC |
|---|
| All Models | (2) (3) |
| (1) At idle. (2) See emission control information label in engine compartment. (3) Ignition timing is controlled by PCM and is not adjustable. |
| (2) | See emission control information label in engine compartment. |
| (3) | Ignition timing is controlled by PCM and is not adjustable. |
ELECTRONIC SPARK ADVANCE CHECK
Note. Always refer to Emission Control Label in engine compartment before attempting service. If manual and label differ, always use emission label specifications.
| Application | Man. Trans. | Auto. Trans. |
|---|
| All Models | N/A | N/A |
ELECTRONIC SPARK ADVANCE (Degrees BTDC @ RPM)
FUEL PUMP
| Application | Pressure - psi (kPa) |
|---|
| All Models | 35-45 (241-310) |
| (1) Fuel pressure taken at engine idle (no load). |
| (1) | Fuel pressure taken at engine idle (no load). |
FUEL PUMP REGULATED PRESSURE (1)
INJECTOR RESISTANCE
| Application | Ohms | °F (°C) |
|---|
| All Models | 13.3-15.7 | 68 (20) |
IDLE SPEED
Note. Mixture is controlled by Powertrain Control Module (PCM). No adjustment is possible.
| Application | Man. Trans. | Auto. Trans. |
|---|
| All Models | N/A | N/A |
| Application | RPM |
|---|
| All Models | 500-900 |
THROTTLE BODY MINIMUM AIRFLOW IDLE SPECIFICATIONS
THROTTLE POSITION SENSOR
| Throttle Opening (2) | Volts |
|---|
| Idle | Greater Than 0.2 |
| WOT | Less Than 4.8 |
| (1) Voltage should increase steadily as throttle opening is increased from idle position. (2) Measure voltage at throttle position sensor center terminal. |
| (1) | Voltage should increase steadily as throttle opening is increased from idle position. |
| (2) | Measure voltage at throttle position sensor center terminal. |
THROTTLE POSITION SENSOR VOLTAGE TEST (1)
