Possible solutions for the symptoms you have selected are shown below.
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Symptom: Idle hunt: occurs at all times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs at random/intermittent times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when the engine is cold

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when the engine is warm

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only with full throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only with no throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only with part throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only as or after the engine is started

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only as or after the engine is turned off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when braking

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when accelerating

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when cruising

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only in gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only out of gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only when changing gears

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only at high speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only at low speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only driving over bumps

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only during rain

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only with the A/C on

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only with the A/C off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only in cold weather

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt: occurs only while using cruise control

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle hunt:

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs at all times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs at random/intermittent times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when the engine is cold

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when the engine is warm

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only with full throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only with no throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only with part throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only as or after the engine is started

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only as or after the engine is turned off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when braking

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when accelerating

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when cruising

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only in gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only out of gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only when changing gears

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only at high speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only at low speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only driving over bumps

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only during rain

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only with the A/C on

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only with the A/C off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only in cold weather

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation: occurs only while using cruise control

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Idle surge/fluctuation:

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: High idle:

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs at all times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs at random/intermittent times

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when the engine is cold

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when the engine is warm

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only with full throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only with no throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only with part throttle applied

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only as or after the engine is started

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only as or after the engine is turned off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when braking

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when accelerating

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when cruising

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only in gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only out of gear

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only when changing gears

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only at high speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only at low speeds

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only driving over bumps

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only during rain

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only with the A/C on

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only with the A/C off

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only in cold weather

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle: occurs only while using cruise control

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: Low idle:

Possible solutions: Inspect air filter Inspect EGR system Inspect electrical wiring and computer systems Inspect fuel injection system Inspect idle speed control system Inspect ignition system Inspect MAF sensor Inspect MAP sensor Inspect O2 sensor Inspect PCV system Inspect throttle body Inspect throttle position sensor Check for vacuum leaks

Symptom: No start: occurs at all times

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs at random/intermittent times

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when the engine is cold

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when the engine is warm

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only with full throttle applied

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only with no throttle applied

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only with part throttle applied

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only as or after the engine is started

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only as or after the engine is turned off

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when braking

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when accelerating

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when cruising

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only in gear

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only out of gear

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system Inspect fuel injection system Inspect ignition system Check for lack of fuel Inspect starter Inspect ignition system

Symptom: No start: occurs only when changing gears

Possible solutions: Inspect alternator Inspect battery Inspect electrical wiring and computer systems Inspect exhaust system