Ignition Timing: Adjustments

NOTE: Check curb idle speed before proceeding to the following procedures. Refer to Vehicle Emission Control Information (VECI) label under hood for correct idle specification.

1. Place transmission in neutral and turn off all lights and accessories.
2. Connect timing light to number 1 cylinder, (refer to timing light manufacturer's instructions for proper connecting procedures).

Coolant Temperature Sensor:

3. Start engine and allow to warm up to normal operating temperature.
4. Disconnect coolant temperature sensor electrical connector on thermostat housing. The "CHECK ENGINE" lamp on the instrument panel should illuminate once this sensor has been disconnected. Coolant fan will come on and stay on throughout the procedure.

Distributor Hold-Down:

Timing Scale:

NOTE: Many driveablity problems can be caused by a slipped timing belt, always check cam timing when adjusting timing on this vehicle.

5. Check timing through timing window in transaxle bellhousing. If timing is within 2° of specifications do not adjust. Refer to Vehicle Emission Control Information (VECI) label under hood for correct timing specification. If timing is incorrect, loosen distributor hold-down bolt and rotate distributor housing until correct timing specification is obtained.
6. Tighten distributor hold-down bolt, and recheck timing. Connect coolant temperature sensor electrical connector, and erase any fault codes that may have been set.

NOTE: There is an additional socket in the bellhousing of the transaxle for a magnetic timing probe. Do not set the timing through this socket using a standard timing light, as this socket is positioned 10° ATDC and timing will be off by this amount.