90-823225--1 10965E-122 - ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY)
HESITATION, SAG OR STUMBLE (continued)
CHECK SENSORS AND CONTROLS FOR:
1. Binding or sticking Throttle Position (TP) sensor or salt corrosion. Throttle Position (TP) sensor
voltage should increase as throttle is moved toward Wide Open Throttle (WOT).
2. Throttle Position (TP) sensor-5 volt reference CKT 416 for open, DTC 21 may be set.
3. Throttle Position (TP) sensor circuit for open or grounds, DTC 21 may be set.
4. Manifold Absolute Pressure (MAP) output voltage check.
5. Coolant sensor out of specification (Hi or low).
ADDITIONAL CHECKS:
1. Proper alternator output voltage.
2. Faulty or incorrect thermostat.
3. Throttle linkage sticking, binding, or worn.
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