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 proper adjustment procedures and only need a specification.
BATTERY SPECIFICATIONS
| Application | Cold Crank Amps @ 0°F (-18°C) | Reserve Minutes |
|---|
| 3.8L | 970 | 150 |
| 4.0L | 970 | 150 |
FLUID CAPACITIES
| Application | (1) Quantity: Qts. (L) |
|---|
| Crankcase (2) |
| 3.8L | 4.0 (3.8) |
| 4.0L | 7.0 (6.6) |
| Cooling System (Includes Heater) |
| 3.8L | 13.0 (12.3) |
| 4.0L | 13.0 (12.3) |
| Automatic Transaxle (3) (4) |
| 3.8L | 6.0 (5.7) |
| 4.0L | 8.0 (7.5) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. (2) Does not include oil filter capacity. (3) Drain and refill capacity only. Does not include torque converter. (4) Dexron-III or Dexron-IIE. |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. |
| (2) | Does not include oil filter capacity. |
| (3) | Drain and refill capacity only. Does not include torque converter. |
| (4) | Dexron-III or Dexron-IIE. |
Replacement Intervals
| Component | Miles |
|---|
| Air Cleaner | 30,000 |
| Camshaft Timing Belt/Chain | (1) |
| Engine Coolant | 100,000 |
| Fuel Filter | (1) |
| Oil & Filter | 7500 |
| Spark Plugs | 100,000 |
| (1) No scheduled replacement interval is given by manufacturer. Check and replace as necessary. |
| (1) | No scheduled replacement interval is given by manufacturer. Check and replace as necessary. |
Drive Belt Adjustment
| Application | (1) Tension: Lbs. (kg) |
|---|
| Serpentine Belt (2) |
| 3.8L | 50-70 (23-32) |
| 4.0L | (3) |
| (1) Specifications are for new belts only. Measure tension using belt tension gauge. (2) Engines with serpentine belts have automatic tensioner. If tension is not as specified, check belt operating length and tensioner operating range. Replace belt or tensioner as necessary. (3) Adjustment of serpentine belt is not necessary. Belt tension is maintained by spring-tensioned idler pulley (some equipped with belt wear indicator). |
| (1) | Specifications are for new belts only. Measure tension using belt tension gauge. |
| (2) | Engines with serpentine belts have automatic tensioner. If tension is not as specified, check belt operating length and tensioner operating range. Replace belt or tensioner as necessary. |
| (3) | Adjustment of serpentine belt is not necessary. Belt tension is maintained by spring-tensioned idler pulley (some equipped with belt wear indicator). |
ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.
| Application | Specification |
|---|
| Compression Ratio |
| 3.8L |
| VIN K | 9.4:1 |
| VIN 1 | 8.5:1 |
| 4.0L | 10.3:1 |
| Normal Compression Pressure | (1) |
| Minimum Compression Pressure | (1) |
| (1) Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm 2 ). |
| (1) | Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm 2 ). |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic lifters. Adjustment is not required.
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| 3.8L & 4.0L | 30,000 Maximum |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | AC Spark Plug |
|---|
| 3.8L |
| VIN K | 41-921 |
| VIN 1 | 41-601 |
| 4.0L | 41-900 |
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|
| 3.8L | .060 (1.52) | 11 (15) |
| 4.0L | .050 (1.27) | 11 (15) |
SPARK PLUG SPECIFICATIONS
Firing Order (3.8L). Scheme 1
Scheme 1: Firing Order (3.8L)
Firing Order (4.0L). Scheme 2
Scheme 2: Firing Order (4.0L)
IGNITION TIMING
Note. All engines are equipped with C(3)I, DIS, IDI or Opti-Spark ignition system. Timing on these systems is not adjustable.
FUEL PUMP
| Application | Pressure: psi (kg/cm 2 ) |
|---|
| 3.8L | 48-55 (3.37-3.87) |
| 4.0L | 46-59 (3.23-4.15) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| 3.8L | (1) 11.4-12.6 |
| 4.0L | (1) 8.0-25.0 |
| (1) Injector resistance specification is at 50-95°F (10-35°C). |
| (1) | Injector resistance specification is at 50-95°F (10-35°C). |
INJECTOR RESISTANCE SPECIFICATIONS
IDLE SPEED & MIXTURE
Note. Idle mixture is controlled by Powertrain Control Module (PCM). Idle mixture adjustment is neither required nor possible.
THROTTLE POSITION (TP) SENSOR
Note. For further testing, see appropriate TESTS W/CODES article.
| Application | Volts |
|---|
| 3.8L & 4.0L | (1) (2) |
| (1) TP sensor is not adjustable. (2) Voltage range is less than one volt at closed throttle to greater than 4 volts at wide open throttle. |
| (1) | TP sensor is not adjustable. |
| (2) | Voltage range is less than one volt at closed throttle to greater than 4 volts at wide open throttle. |
TP SENSOR ADJUSTMENT VOLTAGE
