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1994
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4Runner 3.0 V, RWD
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Engine Performance
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Engine Controls - Tests W/O Codes
Engine Controls - Tests W/O Codes
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Introduction
Symptoms
Symptom Diagnosis
Engine Cranking Or Starting Problems
Engine Fails To Crank
Engine Cranks But Fails To Start
Engine Difficult To Start Under Normal Conditions
Engine Difficult To Start Under Cold Conditions
Engine Difficult To Start Under Hot Conditions
Engine Idling Problems
Incorrect Idle At Engine Start-Up
Engine Idle Speed Remains High
Engine Idle Speed Remains Low
Rough Engine Idle
Engine Misfires
Engine DRIVEABILITY Problems
Hesitation & Poor Acceleration
Engine Backfires
Engine Surges
Engine Knocks
Muffler Explosion
Engine Stalling Problems
Engine Stalls Soon After Start-Up
Engine Stalls After Accelerator Is Depressed
Engine Stalls After Accelerator Is Released
Engine Stalls During A/C Operation
Engine Stalls When Shifting From Neutral Into Drive (A/T Models)
Engine Has Poor Fuel Economy
INTERMITTENTS
Intermittent Problem Diagnosis
Test Procedures
Intermittent Simulation
Vibration Method
Wiring Harness Testing
Component, Relay & Sensor Testing
Electrical Connector Testing
Heat Method
Humidity Method
Electrical Load Method