Poor Performance Test

NOTE: Perform the Testing For Spark At Coil procedure prior to this test, to avoid spending unnecessary diagnostic time and possible incorrect results.

Warning: Be sure to apply parking brake and/or block wheels before performing any test with the engine running.


Check and adjust basic timing, SEE ADJUSTMENTS.

Coolant Temperature Sensor Resistance Test:

COOLANT TEMPERATURE SENSOR TEST

1. With key off, disconnect connector from coolant temperature sensor.

2. Connect ohmmeter across coolant temperature sensor. Resistance should read as follows-

- Engine/Sensor at normal operating temperature, around 200°F, approximately 700 to 1,000 ohms.

- Engine/Sensor at room temperature, around 70°F, approximately 7,000 to 13,000 ohms.

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR TEST


SEE Computers and Control Systems/TESTING AND INSPECTION/PROCEDURES