INSPECTION & ADJUSTMENT

1994 B Series Pick-up W/3.0L Engine

NOTE: Always refer to the Vehicle Emission Information Label in the engine compartment to verify the timing adjustment procedure.

1. Place automatic transmission in PARK or manual transmission in NEUTRAL. The air conditioning and heater controls and all accessories should be in the OFF position.
2. Connect an inductive timing light and tachometer to the engine, according to the manufacturer's instructions.

3. Disconnect the single wire in-line spout connector or remove the shorting bar from the double wire spout connector.
4. Start the engine and bring to normal operating temperature.

   NOTE: To set timing correctly, a remote starter should not be used. Use the ignition key only to start the vehicle. Disconnecting the start wire at the starter relay will cause the TFI module to revert to start mode timing after the vehicle is started. Reconnecting the start wire after the vehicle is running will not correct the timing.

5. Check the idle speed, and adjust if needed.
6. Check the initial timing by aiming the timing light at the timing marks and pointer. Refer to the underhood emission label for specifications.
7. If the marks do not align, shut off the engine and loosen the distributor hold-down bolt. Start the engine, aim the timing light and turn the distributor until the timing marks align. Shut off the engine and tighten the distributor hold-down bolt.
8. Reconnect the single wire in-line spout connector or reinstall the shorting bar on the double wire spout connector. Check the timing advance to verify the distributor is advancing beyond the initial setting.
9. Remove the timing light and tachometer.

MPV Model With 2.6L ENGINE

1. Apply the parking brake and place the gearshift lever in P.
2. Start the engine and bring to normal operating temperature. Make sure all electrical loads and the A/C switch are OFF.
3. Connect a timing light and connect a tachometer to the IG terminal of the diagnostic connector.
4. Connect a jumper wire between the TEN and GND terminals of the diagnostic connector.
5. Check the idle speed and adjust, if necessary. The idle speed should be 780–820 rpm.
6. Aim the timing light at the timing scale on the timing belt cover and the timing mark on the crankshaft pulley. The timing should be 4–6 degrees BTDC.
7. If the timing is not as specified, loosen the distributor mounting bolt and turn the distributor to adjust. After adjustment, tighten the bolt to 19 ft. lbs. (25 Nm) and recheck the timing.
8. Remove the jumper wire and all test equipment.

MPV Model With 3.0L ENGINE

1994–95

1. Apply the parking brake and place the gearshift lever in P.
2. Start the engine and bring to normal operating temperature. Make sure all electrical loads and the A/C switch are OFF.
3. Connect a timing light and connect a tachometer to the IG terminal of the diagnostic connector.
4. Connect a jumper wire between the TEN and GND terminals of the diagnostic connector.
5. Check the idle speed and adjust, if necessary. The idle speed should be 780–820 rpm.
6. Aim the timing light at the timing scale on the timing belt cover and the timing mark on the crankshaft pulley. The timing should be 4–6 degrees BTDC.
7. If the timing is not as specified, loosen the distributor mounting bolt and turn the distributor to adjust. After adjustment, tighten the bolt to 19 ft. lbs. (25 Nm) and recheck the timing.
8. Remove the jumper wire and all test equipment.

1996–98

1. Apply the parking brake and place the gearshift lever in P.
2. Start the engine and bring to normal operating temperature. Make sure all electrical loads and the A/C switch are OFF.
3. Connect a timing light to the high-tension lead No. 1.
4. Connect the SST 49 B019 9A0 (system selector) to the data link connector.
5. Set the switch A to position No. 1 and set the test switch to SELF TEST. Verify that the idle speed is within specifications. If not, adjust it. Specification is 500–900 rpm.
6. Verify that the timing mark (yellow) is within the specification. Specification is BTDC 10–12°.
7. If not as specified, loosen the distributor lock bolts and turn the distributor to make the adjustment.
8. Tighten the distributor lock bolts to 14–18 ft. lbs. (19–25 Nm).
9. Disconnect the SST (system selector) and verify that the timing mark (yellow) is within specification. Specification is ATDC 2–BTDC 34°.
10. Stop the engine and disconnect the timing light.

Except 1994 B Series Pick-ups W/3.0L Engine and All MPV Models

These engines utilize a Distributorless Ignition System (DIS). On this system, ignition coil packs fire the spark plugs directly through the spark plug wires. All spark timing and advance is determined by the ignition control module and engine control computer. No ignition timing adjustments are necessary or possible.