ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Ratio |
| Amigo, Rodeo & Passport |
| 2.2L | 9.6:1 |
| 3.2L | 9.1:1 |
| Hombre |
| 2.2L | 8.9:1 |
| 4.3L | 9.2:1 |
| Trooper & SLX | 9.1:1 |
| Compression Pressure (Minimum) |
| Amigo, Rodeo, Passport, Trooper & SLX |
| 2.2L | (1) |
| 3.2L & 3.5L | 145 psi (10.2 kg/cm 2 ) |
| Hombre | 1100 psi (7.0 kg/cm 2 ) |
| (1) Maximum pressure difference between any 2 cylinders is 14.5 psi (1.02 kg/cm 2 ). |
| (1) | Maximum pressure difference between any 2 cylinders is 14.5 psi (1.02 kg/cm 2 ). |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
| Application | (1) In. (mm) |
|---|
| Amigo, Rodeo & Passport |
| 2.2L | (2) |
| 3.2L |
| Intake | .011 (.28) |
| Exhaust | .012 (.30) |
| Hombre | (2) |
| Trooper & SLX |
| Intake | .011 (.28) |
| Exhaust | .015 (.38) |
| (1) Adjust valve clearance with engine cold. (2) Hydraulic lash adjusters are used. No adjustment is required. |
| (1) | Adjust valve clearance with engine cold. |
| (2) | Hydraulic lash adjusters are used. No adjustment is required. |
VALVE CLEARANCE SPECIFICATIONS
CYLINDER HEAD VALVE ARRANGEMENT
| Application | Valve Location |
|---|
| Amigo, Rodeo & Passport |
| 2.2L (1) |
| Exhaust | Left Side |
| Intake | Right Side |
| 3.2L | (2) |
| Hombre |
| 2.2L (1) |
| Exhaust | Left Side |
| Intake | Right Side |
| 4.3L |
| Left Side | (1) EIEIIE |
| Right Side | (1) EIIEIE |
| Trooper & SLX | (2) |
| (1) Right and left sides refer to engine as viewed from radiator. (2) Intake valves are on side of head closest to intake manifold. Exhaust valves are on side of head closest to exhaust manifold. |
| (1) | Right and left sides refer to engine as viewed from radiator. |
| (2) | Intake valves are on side of head closest to intake manifold. Exhaust valves are on side of head closest to exhaust manifold. |
DISTRIBUTOR
Hombre (4.3L) is only model equipped with distributor. All other applications use Distributorless Ignition System (DIS). Distributor specifications not available at time of publication.
IGNITION COIL
| Application (1) | Primary | Secondary |
|---|
| Amigo, Rodeo & Passport |
| 2.2L | .81-18 | 9000-12,000 |
| 3.2L | (2) | (2) |
| Hombre | (2) | 5000-25,000 |
| Trooper & SLX | (2) | (2) |
| (1) Insulation resistance should not be more than 10 megohms. (2) Information not available at time of publication. |
| (1) | Insulation resistance should not be more than 10 megohms. |
| (2) | Information not available at time of publication. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application | Resistance |
|---|
| Amigo, Rodeo, Passport, Trooper & SLX (1) |
| 0-15" wire | 3000-10,000 |
| 15-25" wire | 4000-15,000 |
| 25-35" wire | 6000-20,000 |
| Hombre | 30,000 Maximum |
| (1) Wire longer then 35" should measure about 5000-10,000 ohms/foot. |
| (1) | Wire longer then 35" should measure about 5000-10,000 ohms/foot. |
HIGH TENSION WIRE RESISTANCE - Ohms @ 68°F (20°C)
SPARK PLUGS
| Application | No. |
|---|
| Amigo, Rodeo, Passport, Trooper & SLX |
| NGK | PK16PR11 |
| Champion | RC10PYP4 |
| Hombre |
| 2.2L (AC) | 41-928 |
| 4.3L (AC) | 41-932 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| Amigo, Rodeo, Passport |
| Trooper & SLX | .041 (1.05) | 13 (18) |
| Hombre |
| 2.2L | .050 (1.27) | 15 (20) |
| 4.3L | .045 (1.14) | 15 (20) |
SPARK PLUG SPECIFICATIONS
IGNITION TIMING
Note. All models are equipped with electronic computer-controlled ignition system. Ignition timing is not adjustable.
FIRING ORDER
Note. For firing order, see appropriate illustration. (Scheme 1)- see scheme 4.
Firing Order (Amigo, Hombre & Rodeo - 2.2L). Scheme 1
Scheme 1: Firing Order (Amigo, Hombre & Rodeo - 2.2L)
Firing Order (Amigo, Passport & Rodeo - 3.2L). Scheme 2
Scheme 2: Firing Order (Amigo, Passport & Rodeo - 3.2L)
Firing Order & Distributor Rotation (Hombre - 4.3L). Scheme 3
Scheme 3: Firing Order & Distributor Rotation (Hombre - 4.3L)
FUEL PUMP
| Application | Pressure psi (kg/cm 2 ) |
|---|
| Amigo, Rodeo & Passport |
| 2.2L | 42-55 (2.9-3.9) |
| 3.2L | 42-55 (2.9-3.9) |
| Hombre |
| 2.2L | 41-47 (2.9-3.3) |
| 4.3L | 60-66 (4.2-4.6) |
| Trooper & SLX 3.5L | 42-55 (2.9-3.9) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Amigo, Rodeo, Passport, Trooper & SLX | (1) |
| Hombre | (2) |
| (1) Information not available at time of publication. (2) Resistance values not available at time of publication. To check injectors, perform appropriate injector test. See appropriate test in appropriate TESTS W/CODES article. |
| (1) | Information not available at time of publication. |
| (2) | Resistance values not available at time of publication. To check injectors, perform appropriate injector test. See appropriate test in appropriate TESTS W/CODES article. |
IDLE SPEED
| Application | RPM |
|---|
| Amigo, Rodeo & Passport |
| 2.2L (1) | 800 |
| 3.2L (3) | 750 |
| Hombre |
| 2.2L | (2) (3) |
| 4.3L | 650 |
| Trooper & SLX (3) | 750 |
| (1) Transmission in Park or Neutral. (2) Idle speed specification not available at time of publication. (3) Idle speed is controlled by PCM and is not adjustable. |
| (1) | Transmission in Park or Neutral. |
| (2) | Idle speed specification not available at time of publication. |
| (3) | Idle speed is controlled by PCM and is not adjustable. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR
Note. Refer to appropriate ADJUSTMENTS article for throttle position sensor/switch adjustment procedures.
