IDLE SPEED
| Application | Idle RPM |
|---|
| Amigo & Pickup |
| 2.3L (1) (2) | 900 |
| 2.6L (1) (3) (4) | 900 |
| 3.1L | 750 |
| Rodeo |
| 2.6L | 900 |
| 3.2L | 750 |
| Stylus (1) |
| A/T | 940 |
| M/T | 850 |
| Trooper (5) | 750 |
| (1) Transmission or transaxle in Park or Neutral. (2) Disconnect and plug vacuum advance, canister purge and EGR vacuum lines. (3) Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines. (4) On California vehicles, disconnect and plug vacuum line for EGR vacuum switching valve. (5) Idle speed is controlled by ECM and is not adjustable. |
| (1) | Transmission or transaxle in Park or Neutral. |
| (2) | Disconnect and plug vacuum advance, canister purge and EGR vacuum lines. |
| (3) | Disconnect fuel pressure regulator Vacuum Switching Valve (VSV). Disconnect and plug canister purge and EGR vacuum lines. |
| (4) | On California vehicles, disconnect and plug vacuum line for EGR vacuum switching valve. |
| (5) | Idle speed is controlled by ECM and is not adjustable. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION SENSOR (TPS)
Note. Refer to appropriate ON-VEHICLE ADJUSTMENTS article for throttle position sensor/switch adjustment procedures.
ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Ratio |
| Amigo & Pickup |
| 2.3L | 8.3:1 |
| 2.6L | 8.6:1 |
| 3.1L | 8.5:1 |
| Rodeo |
| 2.6L | 8.6:1 |
| 3.2L | 9.3:1 |
| Stylus |
| 1.6L | 9.1:1 |
| 1.8L | 9.7:1 |
| Trooper |
| SOHC | 9.3:1 |
| DOHC | 9.8:1 |
| Compression Pressure |
| Amigo & Pickup |
| 2.3L & 2.6L | (1) 142-171 psi (9.9-12.0 kg/cm 2 ) |
| 3.1L | (2) |
| Rodeo |
| 2.6L & 3.2L (3) | 170 psi (12.0 kg/cm 2 ) |
| Stylus |
| 1.6L | 178 psi (12.5 kg/cm 2 ) |
| 1.8L | 185 psi (13.0 kg/cm 2 ) |
| Trooper (3) |
| SOHC | 170 psi (12.0 kg/cm 2 ) |
| DOHC | 178 psi (12.5 kg/cm 2 ) |
| (1) Minimum pressure is 114 psi (8.0 kg/cm 2 ). (2) Information is not available from manufacturer. (3) Minimum pressure is 128 psi (9.0 kg/cm 2 ). |
| (1) | Minimum pressure is 114 psi (8.0 kg/cm 2 ). |
| (2) | Information is not available from manufacturer. |
| (3) | Minimum pressure is 128 psi (9.0 kg/cm 2 ). |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. Pickup 3.1L is equipped with adjustable hydraulic valve lifters. Clearance adjustment is not part of regular maintenance schedule. See appropriate ON-VEHICLE ADJUSTMENTS article. Rodeo 3.2L and Trooper are equipped with hydraulic lash adjusters. No adjustment is required.
| Application | (1) In. (mm) |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L & 2.6L |
| Intake | .006 (.15) |
| Exhaust | .010 (.25) |
| Stylus |
| 1.6L |
| Intake | .006 (.15) |
| Exhaust | .010 (.25) |
| 1.8L | (2) |
| (1) Adjust valve clearance with engine cold. (2) See appropriate ADJUSTMENTS article. |
| (1) | Adjust valve clearance with engine cold. |
| (2) | See appropriate ADJUSTMENTS article. |
VALVE CLEARANCE SPECIFICATIONS
Note. Right and left sides refer to engine as viewed from flywheel.
Right Side
Left Side
Pickup 3.1L
Right Side - E-I-E-I-I-E (Front To Rear)
Left Side - E-I-I-E-I-E (Front To Rear)
Rodeo & Trooper
Intake valves are on side of head closest to intake manifold. Exhaust valves are on side of head closest to exhaust manifold.
DISTRIBUTOR
| Application | In. (mm) |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L & 2.6L | .012-.020 (.30-.50) |
| 3.1L | .008-.016 (.20-.40) |
| Stylus | .008-.016 (.20-.40) |
DISTRIBUTOR PICK-UP COIL AIR GAP
| Application | Ohms |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L & 2.6L | (1) |
| 3.1L | 500-1500 |
| Stylus | 500-1500 |
| (1) Information is not available from manufacturer. |
| (1) | Information is not available from manufacturer. |
DISTRIBUTOR PICK-UP COIL RESISTANCE
IGNITION COIL
| Application (1) | Primary | Secondary |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L | 1.2-1.4 | 8600-13,000 |
| 2.6L | .81-.99 | 7500-11,300 |
| 3.1L | .60-1.0 | 6500-10,200 |
| Rodeo 3.2L & Trooper | (2) | (2) |
| Stylus | 1.2-1.5 | 10,200-13,000 |
| (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, Pickup & Rodeo |
| 2.3L & 2.6L |
| Coil Wire | (1) |
| Spark Plug Wires | 9600-22,400 |
| 3.1L |
| Coil Wire | 1500-3900 |
| Spark Plug Wire No. 1 | 2900-7500 |
| Spark Plug Wire No. 2 | 3500-8500 |
| Spark Plug Wire No. 3 | 2200-7200 |
| Spark Plug Wire No. 4 | 2400-7400 |
| Spark Plug Wire No. 5 | 2400-7400 |
| Spark Plug Wire No. 6 | 2100-7100 |
| Rodeo 3.2L & Trooper |
| SOHC |
| Coil Wire | (2) |
| Spark Plug Wire No. 1 | 6400-14,900 |
| Spark Plug Wire No. 2 | 5700-13,100 |
| Spark Plug Wire No. 3 | 6200-14,400 |
| Spark Plug Wire No. 4 | 5800-13,300 |
| Spark Plug Wire No. 5 | 6400-14,900 |
| Spark Plug Wire No. 6 | 6900-16,000 |
| DOHC |
| Coil Wire | (2) |
| Spark Plug Wire No. 1 | 6200-14,200 |
| Spark Plug Wire No. 2 | 7200-16,700 |
| Spark Plug Wire No. 3 | 6500-14,900 |
| Spark Plug Wire No. 4 | 6800-15,800 |
| Spark Plug Wire No. 5 | 6900-16,000 |
| Spark Plug Wire No. 6 | 6300-14,500 |
| Stylus |
| 1.6L |
| Coil Wire | 2280-5330 |
| Spark Plug Wire No. 1 | 6550-15280 |
| Spark Plug Wire No. 2 | 5200-12140 |
| Spark Plug Wire No. 3 | 4530-10570 |
| Spark Plug Wire No. 4 | 3280-7660 |
| 1.8L |
| Coil Wire | 2740-6380 |
| Spark Plug Wire No. 1 | 5800-13,300 |
| Spark Plug Wire No. 2 | 5200-12,000 |
| Spark Plug Wire No. 3 | 4300-9900 |
| Spark Plug Wire No. 4 | 4200-9600 |
| (1) Information is not available from manufacturer. (2) DIS does not require coil wire. |
| (1) | Information is not available from manufacturer. |
| (2) | DIS does not require coil wire. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | NGK/AC |
|---|
| Amigo | BPR5ES-11/R43XLS |
| Pickup & Rodeo |
| 2.3L & 2.6L | BPR5ES-11/R43XLS |
| 3.1L | R43TSK |
| 3.2L | BKR6E-11 |
| Stylus |
| 1.6L | BPR6ES-11/R42XLS |
| 1.8L | BKR6E-11 |
| Trooper | BKR6E-11 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L & 2.6L | .041 (1.05) | 14 (19) |
| 3.1L | .045 (1.14) | 14 (19) |
| Rodeo 3.2L & Trooper | .041 (1.05) | 14 (19) |
| Stylus | .041 (1.05) | 14 (19) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER & TIMING MARKS
| Application | Base Timing |
|---|
| Amigo, Pickup & Rodeo |
| 2.3L | 6 @ 900 |
| 2.6L | 12 @ 900 |
| 3.1L | 10 @ 800 |
| Rodeo 3.2L & Trooper | 5 @ 750 |
| Stylus | (1) 10 @ 850 |
| (1) In diagnostic mode. |
IGNITION TIMING (Degrees BTDC @ RPM)
Firing Order & Distributor Rotation (4-Cylinder). Scheme 1
Scheme 1: Firing Order & Distributor Rotation (4-Cylinder)
Firing Order & Distributor Rotation (Pickup - V6). Scheme 2
Scheme 2: Firing Order & Distributor Rotation (Pickup - V6)
Firing Order (Rodeo 3.2L & Trooper). Scheme 3
Scheme 3: Firing Order (Rodeo 3.2L & Trooper)
FUEL PUMP
| Application | Pressure psi (kg/cm 2 ) | Min. Vol. in 30 sec. Pts. (L) |
|---|
| Amigo 2.3L & Pickup 2.3L | 3.56 (.25) | (1) |
| (1) Information is not available from manufacturer. |
| (1) | Information is not available from manufacturer. |
FUEL PUMP PERFORMANCE (CARBURETED)
| Application | Unregulated Pressure psi (kg/cm 2 ) | Regulated Pressure psi (kg/cm 2 ) |
|---|
| Amigo & Pickup |
| 2.6L | (1) (2) 42 (2.9) | (3) 35 (2.4) |
| 3.1L | N/A | 9-13 (.62-.91) |
| Rodeo |
| 2.6L | (1) (2) 43 (3.0) | (3) 36 (2.5) |
| 3.2L | N/A | 9-13 (.62-.91) |
| Stylus | (4) 35-42 (2.4-2.9) | (5) 25-30 (1.7-2.1) |
| Trooper | (4) 41-46 (2.8-3.2) | (5) 25-30 (1.4-2.4) |
| (1) With Vacuum Switching Valve (VSV) connector unplugged and pressure regulator vacuum hose disconnected. (2) With pressure regulator vacuum hose connected, 12 volts applied to Blue wire terminal and Black wire terminal grounded of VSV. (3) With pressure regulator vacuum hose connected and Vacuum Switching Valve (VSV) disconnected. (4) With ignition on and vacuum hose disconnected from pressure regulator. (5) With engine at idle or with 12-14 in. Hg vacuum manually applied to pressure regulator. |
| (1) | With Vacuum Switching Valve (VSV) connector unplugged and pressure regulator vacuum hose disconnected. |
| (2) | With pressure regulator vacuum hose connected, 12 volts applied to Blue wire terminal and Black wire terminal grounded of VSV. |
| (3) | With pressure regulator vacuum hose connected and Vacuum Switching Valve (VSV) disconnected. |
| (4) | With ignition on and vacuum hose disconnected from pressure regulator. |
| (5) | With engine at idle or with 12-14 in. Hg vacuum manually applied to pressure regulator. |
FUEL PUMP PERFORMANCE (FUEL INJECTED)
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Amigo & Pickup |
| 2.6L | 13.8 |
| 3.1L | Greater Than 1.2 |
| Rodeo |
| 2.6L | 2-3 |
| 3.2L | 11.8-12.6 |
| Stylus | 2.0 |
| Trooper | .2-3.0 |
