ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Ratio |
| Amigo, Passport & Rodeo |
| 2.2L | 9.6:1 |
| 3.2L | 9.1:1 |
| Hombre |
| 2.2L | 8.9:1 |
| 4.3L | 9.2:1 |
| SLX, Trooper & VehiCROSS | 9.1:1 |
| Compression Pressure (Minimum) |
| Amigo, Passport, Rodeo, SLX, Trooper & VehiCROSS |
| 2.2L | (1) |
| 3.2L & 3.5L | 145 psi (10.2 kg/cm 2 ) |
| Hombre | 100 psi (6.8 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) |
|---|
| 2.2L | (2) |
| 3.2L & 3.5L |
| Intake | .011 (.28) |
| Exhaust | .012 (.30) |
| Hombre | (2) |
| (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, Passport & Rodeo |
| 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 |
| SLX, Trooper & VehiCROSS | (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 are not available from manufacturer.
IGNITION COIL
| Application (1) | Primary | Secondary |
|---|
| Amigo, Passport & Rodeo |
| 2.2L | .81-18 | 9000-12,000 |
| 3.2L | (2) | (2) |
| Hombre | (2) | 5000-25,000 |
| SLX, Trooper & VehiCROSS | (2) | (2) |
| (1) Insulation resistance should not be more than 10 megohms. (2) Information is not available from manufacturer. |
| (1) | Insulation resistance should not be more than 10 megohms. |
| (2) | Information is not available from manufacturer. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application | Resistance |
|---|
| Amigo, Passport, Rodeo, SLX, Trooper & VehiCROSS (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 | Specification |
|---|
| Amigo, Passport, Rodeo, SLX, Trooper & VehiCROSS |
| 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, Passport, Rodeo, SLX, Trooper & VehiCROSS | .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
Firing Order (2.2L). Scheme 1
Scheme 1: Firing Order (2.2L)
Firing Order (3.2L & 3.5L). Scheme 2
Scheme 2: Firing Order (3.2L & 3.5L)
Firing Order & Distributor Rotation (4.3L). Scheme 3
Scheme 3: Firing Order & Distributor Rotation (4.3L)
FUEL PUMP
| Application | Pressure psi (kg/cm 2 ) |
|---|
| Amigo, Passport & Rodeo |
| 2.2L | 41-55 (2.9-3.9) |
| 3.2L | 48-55 (3.4-3.9) |
| Hombre |
| 2.2L | 41-47 (2.9-3.3) |
| 4.3L | 60-66 (4.2-4.6) |
| SLX, Trooper & VehiCROSS | 42-55 (3.0-3.9) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Amigo, Passport, Rodeo, SLX, Trooper & VehiCROSS | (1) |
| Hombre | (2) |
| (1) Information not available from the manufacturer. (2) Resistance values are not available from the manufacturer. To check injectors, perform appropriate injector test. See appropriate test in appropriate SELF-DIAGNOSTICS article. |
| (1) | Information not available from the manufacturer. |
| (2) | Resistance values are not available from the manufacturer. To check injectors, perform appropriate injector test. See appropriate test in appropriate SELF-DIAGNOSTICS article. |
IDLE SPEED
| Application | RPM |
|---|
| Amigo, Passport & Rodeo |
| 2.2L (1) | 800 |
| 3.2L (2) | 750 |
| Hombre |
| 2.2L | (2) (3) |
| 4.3L | 650 |
| SLX, Trooper & VehiCROSS (2) | 750 |
| (1) Transmission in Park or Neutral. (2) Idle speed is controlled by PCM and is not adjustable. (3) Idle speed specification is not available from manufacturer. |
| (1) | Transmission in Park or Neutral. |
| (2) | Idle speed is controlled by PCM and is not adjustable. |
| (3) | Idle speed specification is not available from manufacturer. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR
Note. Refer to ON-VEHICLE ADJUSTMENTS article for throttle position sensor/switch adjustment procedures.
