INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you are familiar with an adjustment procedure and only need a specification.
BATTERY SPECIFICATIONS
| Application & Group | Cold Cranking Amps | Amp Hr. Rating |
|---|
| Std. Battery (Group 27) | 600 | (1) |
| Opt. Battery (Group 27) | 750 | (1) |
| (1) Information not available at time of publication. |
| (1) | Information not available at time of publication. |
FLUID CAPACITIES
| Application | (1) Quantity |
|---|
| Automatic Transmission (Mopar ATF Plus Type 7176) |
| Drain & Refill | 4.0 Qts. (3.8L) |
| Dry Refill | (2) 8.5 Qts. (8.0L) |
| Cooling System (Includes Heater) | 14.5 Qts. (13.7L) |
| Crankcase (Includes Filter) (3) | 4.0 Qts. (3.8L) |
| Power Steering Fluid (4) | 2.7 Pts. (1.3L) |
| Rear Differential (SAE 80W-90/API GL-5) (5) |
| Dana 60 (6) | 6.0 Pts. (2.8L) |
| 8 1/4" Ring Gear (7) | 4.4 Pts. (2.1L) |
| 9 1/4" Ring Gear (7) | 4.8 Pts. (2.3L) |
| (1) Approximate quantity listed. (2) Quantity may vary by type of oil cooler/cooler lines. (3) Use engine oil with API SH or SH/CD rating. (4) Use only Mopar power steering fluid. DO NOT use automatic transmission fluid. (5) Models with Trac-Lok limited slip differential must have a container of Mopar Trac-Lok Friction Modifier added if lubricant is changed. (6) Rear differential may be identified by full-floating axles shafts. (7) Rear differential may be identified by number of bolts on rear cover. The 8 1/4" ring gear has 10 bolts on rear cover and 9 1/4" ring gear has 12 bolts on rear cover. |
| (1) | Approximate quantity listed. |
| (2) | Quantity may vary by type of oil cooler/cooler lines. |
| (3) | Use engine oil with API SH or SH/CD rating. |
| (4) | Use only Mopar power steering fluid. DO NOT use automatic transmission fluid. |
| (5) | Models with Trac-Lok limited slip differential must have a container of Mopar Trac-Lok Friction Modifier added if lubricant is changed. |
| (6) | Rear differential may be identified by full-floating axles shafts. |
| (7) | Rear differential may be identified by number of bolts on rear cover. The 8 1/4" ring gear has 10 bolts on rear cover and 9 1/4" ring gear has 12 bolts on rear cover. |
REPLACEMENT INTERVALS
| Component | Months | Miles |
|---|
| Air Filter |
| Normal Service | 24 | 30,000 |
| Severe Service | (2) | (3) 15,000 |
| Automatic Transmission Fluid, Filter & Band Adjustment |
| Normal Service | 30 | 37,500 |
| Severe Service | (2) | 12,000 |
| Coolant | (4) 36 | (4) |
| Engine Oil |
| Normal Service | 6 | 7500 |
| Severe Service | (2) | 3000 |
| Engine Oil Filter |
| Normal Service | 12 | 15,000 |
| Severe Service | (2) | 6000 |
| Manual Transmission Fluid | (6) | (6) |
| PCV Valve (7) |
| Normal Service | 48 | 60,000 |
| Severe Service | (2) | 30,000 |
| Rear Differential Fluid (5) |
| Severe Service | (2) | 12,000 |
| Repack Front Wheel Bearings |
| Normal Service | 18 | 22,500 |
| Severe Service | (2) | 21,000 |
| Spark Plugs |
| Normal Service | 24 | 30,000 |
| Severe Service | (2) | 30,000 |
| Spark Plug Wires |
| Normal Service | 48 | 60,000 |
| Severe Service | (2) | 60,000 |
| (1) Different interval is required for normal and severe service. Severe service is described as trailer towing, off-highway operation, snow removal operation, or operating in dusty or excessively hot conditions. (2) Monthly interval not available at time of publication. (3) Inspect air filter every 15,000 miles and replace as necessary. Replace at 30,000 miles unless previously replaced during inspection. (4) Replace coolant at 45,000 miles or 36 months whichever occurs first. Replace coolant at 36 months regardless of mileage. After first coolant change, replace coolant every 24 months or 30,000 miles thereafter. (5) Normal service interval not available at time of publication. Manufacturer lists service schedule only under severe service conditions. (6) Service interval not available at time of publication. (7) Inspect at scheduled interval and replace as necessary. |
| (1) | Different interval is required for normal and severe service. Severe service is described as trailer towing, off-highway operation, snow removal operation, or operating in dusty or excessively hot conditions. |
| (2) | Monthly interval not available at time of publication. |
| (3) | Inspect air filter every 15,000 miles and replace as necessary. Replace at 30,000 miles unless previously replaced during inspection. |
| (4) | Replace coolant at 45,000 miles or 36 months whichever occurs first. Replace coolant at 36 months regardless of mileage. After first coolant change, replace coolant every 24 months or 30,000 miles thereafter. |
| (5) | Normal service interval not available at time of publication. Manufacturer lists service schedule only under severe service conditions. |
| (6) | Service interval not available at time of publication. |
| (7) | Inspect at scheduled interval and replace as necessary. |
REPLACEMENT INTERVALS (1)
BELT ADJUSTMENT
Note. Automatic belt tensioner is used. Belt tension adjustment is not required.
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 |
| Compression Pressure | (1) |
| Minimum Compression Pressure | 100 psi (690 kPa) |
| Maximum Variation Between Cylinders | 25 psi (172 kPa) |
| (1) Information not available at time of publication. |
| (1) | Information not available at time of publication. |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Engine is equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL
| Application | Primary | Secondary |
|---|
| Diamond (1) | .96-1.18 | 11,300-15,300 |
| Toyodenso (1) | .95-1.20 | 11,300-13,300 |
| (1) This is the manufacturer of ignition coil. |
| (1) | This is the manufacturer of ignition coil. |
IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| All High Tension Wires | (1) |
| (1) Resistance should be 250-1000 ohms per one inch, or 3000-12,000 ohms per 12 inches. |
| (1) | Resistance should be 250-1000 ohms per one inch, or 3000-12,000 ohms per 12 inches. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS (TYPE)
| Application | Champion No. |
|---|
| Ram Van/Wagon | RC12YC |
| (1) Check spark plug application on underhood vehicle emission control label. If application differs from application listed, use application on underhood vehicle emission control label. |
| (1) | Check spark plug application on underhood vehicle emission control label. If application differs from application listed, use application on underhood vehicle emission control label. |
SPARK PLUG SPECIFICATIONS
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| Ram Van/Wagon | .035 (.89) | 30 (41) |
| (1) Check plug gap specification on underhood vehicle emission control label. If spec differs from that listed above, use specification on underhood vehicle emission control label. |
| (1) | Check plug gap specification on underhood vehicle emission control label. If spec differs from that listed above, use specification on underhood vehicle emission control label. |
SPARK PLUG SPECIFICATIONS (1)
Firing Order & Distributor Rotation. Scheme 1
Scheme 1: Firing Order & Distributor Rotation
IGNITION TIMING
Note. Ignition timing is controlled by Powertrain Control Module (PCM). Ignition timing is non-adjustable. DO NOT attempt to adjust ignition timing.
FUEL PUMP
| Application | Pressure psi (kPa) | Min. Vol. In One Minute Pts. (L) |
|---|
| Ram Van/Wagon | (1) 44-54 (303-373) | (2) |
| (1) Manufacturer lists fuel pressure with engine off, ignition on and using scan tool to activate fuel pump. (2) Information not available at time of publication. |
| (1) | Manufacturer lists fuel pressure with engine off, ignition on and using scan tool to activate fuel pump. |
| (2) | Information not available at time of publication. |
INJECTOR RESISTANCE
| Application | Ohms @ 68°F (20°C) |
|---|
| 3.9L | 13.3-15.7 |
IDLE SPEED & MIXTURE
Note. Idle speed and mixture are controlled by Powertrain Control Module (PCM). No adjustment is required.
| Application | RPM |
|---|
| 3.9L | (1) |
| (1) Idle speed is nonadjustable. |
| (1) | Idle speed is nonadjustable. |
IDLE SPEED SPECIFICATIONS
THROTTLE BODY MINIMUM AIRFLOW IDLE SPEED
| Application | RPM |
|---|
| Ram Van/Wagon | (1) 500-900 |
| (1) Spec listed with Air Metering Fitting (6714) installed. |
| (1) | Spec listed with Air Metering Fitting (6714) installed. |
THROTTLE BODY MINIMUM AIRFLOW IDLE SPEED SPECIFICATIONS
THROTTLE POSITION SENSOR VOLTAGE SPECIFICATIONS
| Throttle Opening | (1) (2) Volts |
|---|
| At Idle | Greater Than .20 |
| At Full Throttle | Less Than 4.80 |
| (1) Measure voltage at center terminal on throttle position sensor with ignition on. (2) Voltage should increase smoothly when moving throttle from idle to full throttle. |
| (1) | Measure voltage at center terminal on throttle position sensor with ignition on. |
| (2) | Voltage should increase smoothly when moving throttle from idle to full throttle. |
THROTTLE POSITION SENSOR VOLTAGE SPECIFICATIONS
