ENGINE COMPRESSION
Information is not available from manufacturer.
VALVE CLEARANCE
All engines are equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL
| Application | Primary | Secondary |
|---|
| 3.7L & 4.7L | 0.60-0.90 | 6000-9000 |
| 5.7L | 0.56-0.69 | (1) |
| 5.9L |
| Diamond | 0.97-1.18 | 11,300-15,300 |
| Toyodenso | 0.95-1.20 | 11,300-13,300 |
| 8.0L | 0.53-0.65 | 10,900-14,700 |
| (1) Information is not available from manufacturer. |
| (1) | Information is not available from manufacturer. |
IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)
HIGH TENSION WIRE RESISTANCE
| Application | (1) Ohms |
|---|
| All High Tension Wires | (2) |
| (1) Maximum wire resistance is listed according to high tension wire application. For cylinder identification, see FIRING ORDER . (2) Resistance should be 250-1000 ohms per one inch or 3000-12,000 ohms per foot. |
| (1) | Maximum wire resistance is listed according to high tension wire application. For cylinder identification, see FIRING ORDER . |
| (2) | Resistance should be 250-1000 ohms per one inch or 3000-12,000 ohms per foot. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Spark Plug Type |
|---|
| 3.7L | ZFR6F-11G (NGK) |
| 4.7L | RC12MCC4 |
| 5.7L | Champion RE14MCC4 |
| 5.9L | Champion RC12LC4 |
| 8.0L | (2) QC9MC4 |
| (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. (2) Information on spark plug manufacturer is not available. |
| (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. |
| (2) | Information on spark plug manufacturer is not available. |
| Application | Gap - In. (mm) | Torque - Ft. Lbs. (N.m) |
|---|
| 3.7L | 0.042 (1.10) | 20 (27) |
| 4.7L | 0.040 (1.01) | 20 (27) |
| 5.7L | 0.045 (1.14) | 11-15 (15-21) |
| 5.9L | 0.040 (1.01) | 30 (41) |
| 8.0L | 0.045 (1.14) | 30 (41) |
| (1) Check spark plug gap specification on underhood vehicle emission control label. If specification differs from that listed above, use specification on underhood vehicle emission control label. |
| (1) | Check spark plug gap specification on underhood vehicle emission control label. If specification differs from that listed above, use specification on underhood vehicle emission control label. |
SPARK PLUG SPECIFICATIONS (1)
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
IGNITION TIMING
On all models, ignition timing is nonadjustable.
FUEL PUMP
| Pressure - psi (kPa) | Minimum Volume |
|---|
| (1) 47.2-51.2 (305-373) | (2) |
| (1) Manufacturer lists fuel pressure with engine off, ignition on and using scan tool to activate fuel pump. (2) Information is not available from manufacturer. |
| (1) | Manufacturer lists fuel pressure with engine off, ignition on and using scan tool to activate fuel pump. |
| (2) | Information is not available from manufacturer. |
INJECTOR RESISTANCE
| Application | Ohms @ 68°F (20°C) |
|---|
| All Models | 10.8-13.2 |
IDLE SPEED & MIXTURE
Idle speed and mixture are controlled by Powertrain Control Module (PCM). No adjustment is necessary.
THROTTLE BODY MINIMUM AIRFLOW IDLE SPEED
Information is not available from manufacturer. All idle speed functions are controlled by the PCM.
THROTTLE POSITION SENSOR
| Throttle Opening | (1) Volts |
|---|
| 3.7L, 4.7L, 5.9L & 8.0L (2) |
| At Idle | About .26 |
| At Full Throttle | 4.49 |
| (1) Specification is approximate and may vary slightly due to sensor and throttle body tolerances. (2) The 5.7L does not use a separate TP sensor. |
| (1) | Specification is approximate and may vary slightly due to sensor and throttle body tolerances. |
| (2) | The 5.7L does not use a separate TP sensor. |
THROTTLE POSITION SENSOR VOLTAGE SPECIFICATIONS
