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 |
|---|
| 3.8L (Group 34) |
| With Trailer Towing | 500 | 60 |
| Without Trailer Towing | 685 | 72 |
FLUID CAPACITIES
| Application | (1) Quantity |
|---|
| Automatic Transaxle (Mopar ATF Plus Type 7176) |
| Drain & Refill | 4.0 Qts. (3.8L) |
| Dry Refill | 9.1 Qts. (8.6L) |
| Cooling System (2) | 13.2 Qts. (12.5L) |
| Crankcase (Includes Filter) (3) | 4.5 Qts. (4.3L) |
| Overrunning Clutch (AWD) |
| (Mopar ATF Plus Type 7176) (4) | 12 Ozs. (.35L) |
| Power Steering Fluid (5) | 1.7 Pts. (.8L) |
| Power Transfer Unit (AWD) |
| (SAE 85W-90/API GL-5) | 1.2 Qts. (1.14L) |
| Rear Differential (AWD) |
| (SAE 85W-90/API GL-5) (5) | 2 Qts. (1.9L) |
| (1) Approximate quantity listed. (2) Quantity includes heater and coolant recovery tank. Add 2 qts.(1.9L) if equipped with rear heater. (3) Use engine oil with API SH or SH/CD rating. (4) Overrunning clutch is bolted on front of rear differential, between torque tube for drive shaft and rear differential. Overrunning clutch contains a separate reservoir from rear differential. Ensure fluids are checked at appropriate component, as different types of fluids are used. (5) Use only Mopar power steering fluid. DO NOT use automatic transmission fluid. |
| (1) | Approximate quantity listed. |
| (2) | Quantity includes heater and coolant recovery tank. Add 2 qts.(1.9L) if equipped with rear heater. |
| (3) | Use engine oil with API SH or SH/CD rating. |
| (4) | Overrunning clutch is bolted on front of rear differential, between torque tube for drive shaft and rear differential. Overrunning clutch contains a separate reservoir from rear differential. Ensure fluids are checked at appropriate component, as different types of fluids are used. |
| (5) | Use only Mopar power steering fluid. DO NOT use automatic transmission fluid. |
REPLACEMENT INTERVALS
| Component | Months | Miles |
|---|
| Air Filter |
| Normal Service | 24 | 30,000 |
| Severe Service | (2) | (3) 15,000 |
| Coolant | 36 | (5) |
| Engine Oil |
| Normal Service | 6 | 7500 |
| Severe Service | (2) | 3000 |
| Engine Oil Filter |
| Normal Service | 12 | 15,000 |
| Severe Service | (2) | 6000 |
| PCV Valve (4) |
| Normal Service | 48 | 60,000 |
| Severe Service | (2) | 30,000 |
| Spark Plugs |
| Normal Service | (2) | 100,000 |
| Severe Service | (2) | 75,000 |
| Spark Plug Wires |
| Normal Service | (2) | 100,000 |
| Severe Service | (2) | 75,000 |
| Auto. Trans. Fluid, Filter & |
| Band Adjustment (6) | (7) | (7) |
| Power Transfer Unit |
| Fluid (AWD) (8) | (2) | 12,000 |
| Rear Differential & Overrunning |
| Clutch Fluid (AWD) (7) | (2) | 21,000 |
| (1) Different interval is required for normal and severe service. Severe service is described as trailer towing, police, taxi, local delivery service 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) Inspect at scheduled interval and replace as necessary. Inspect every 30,000 miles after 1st scheduled interval if not previously replaced at scheduled interval listed. (5) 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. (6) Band adjustment required on 3-speed transaxle. (7) Normal service interval not available at time of publication. Under severe service, change fluid, filter and adjust bands every 15,000 miles. (8) Normal service interval not available at time of publication. Manufacturer lists service schedule only under severe service conditions. |
| (1) | Different interval is required for normal and severe service. Severe service is described as trailer towing, police, taxi, local delivery service 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) | Inspect at scheduled interval and replace as necessary. Inspect every 30,000 miles after 1st scheduled interval if not previously replaced at scheduled interval listed. |
| (5) | 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. |
| (6) | Band adjustment required on 3-speed transaxle. |
| (7) | Normal service interval not available at time of publication. Under severe service, change fluid, filter and adjust bands every 15,000 miles. |
| (8) | Normal service interval not available at time of publication. Manufacturer lists service schedule only under severe service conditions. |
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 | 8.9:1 |
| Compression Pressure | (1) |
| Minimum Compression Pressure | 100 psi (690 kPa) |
| Maximum Variation Between Cylinders | 25 Percent |
| (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 |
|---|
| 3.8L | .45-.65 | 7000-15,800 |
IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| Cylinder No. 1 | 18,500 |
| Cylinder No. 2 | 15,500 |
| Cylinder No. 3 | 20,400 |
| Cylinder No. 4 | 21,200 |
| Cylinder No. 5 | 27,700 |
| Cylinder No. 6 | 26,700 |
| Ignition Coil Wire | 11,100 |
| (1) Maximum wire resistance is listed according to high tension wire application. For cylinder identification, see FIRING ORDER . |
| (1) | Maximum wire resistance is listed according to high tension wire application. For cylinder identification, see FIRING ORDER . |
HIGH TENSION WIRE RESISTANCE (1)
SPARK PLUGS (TYPE)
| Application | Champion No. |
|---|
| 3.8L | RN14PMP5 |
| (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) |
|---|
| 3.8L | .048-.053 (1.22-1.35) | 20 (27) |
| (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. Scheme 4
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) |
|---|
| Caravan & Voyager | (1) 49 (338) | (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) |
|---|
| 3.8L | 10-16 |
IDLE SPEED & MIXTURE
Note. Idle speed and mixture are controlled by Powertrain Control Module (PCM). No adjustment is required.
| Application | RPM |
|---|
| 3.8L | (1) |
| (1) Idle speed is nonadjustable. |
| (1) | Idle speed is nonadjustable. |
IDLE SPEED SPECIFICATIONS
THROTTLE BODY MINIMUM AIRFLOW IDLE SPEED
| Application | RPM |
|---|
| 1000 Miles Or Less | (1) 525-875 |
| More Than 1000 Miles | (1) 575-875 |
| (1) Spec listed with Air Metering Fitting (6457) installed. |
| (1) | Spec listed with Air Metering Fitting (6457) installed. |
THROTTLE BODY MINIMUM AIRFLOW IDLE SPEED SPECIFICATIONS
THROTTLE POSITION SENSOR VOLTAGE SPECIFICATIONS
| Throttle Opening | (1) (2) Volts |
|---|
| At Idle | Greater Than .35 |
| At Full Throttle | Less Than 4.50 |
| (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
