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Home >> Chrysler >> 1996 >> Sebring LXi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System Testing & Engine Component Testing - 2.5L VIN [N] >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System

Exhaust Gas RECIRCULATION (EGR) System

  1. Inspect hose connections between intake manifold, EGR solenoid and transducer, and EGR valve. Replace hardened, cracked and damaged hoses.
  2. Ensure engine coolant temperature is more than 170°F (77°C). Put transmission in Neutral. Allow engine to idle for approximately 70 seconds. Suddenly accelerate engine to approximately 2000 RPM, but not more than 3000 RPM. EGR valve stem should move when accelerating engine. Repeat test several times to confirm EGR valve stem movement.
  3. If EGR valve stem moves, EGR control system if functioning properly, go to next step. If EGR valve stem does not move, verify EGR solenoid operation. See SOLENOIDS  under MOTORS, RELAYS & SOLENOIDS. After verifying solenoid operation, go to next step.
  4. With engine idling at operating temperature, slowly apply vacuum to EGR valve. When vacuum reaches approximately 3.5 in. Hg, engine idle will become rough or engine may stall. If engine idle does not become rough or engine does not stall, go to next step. If engine idle becomes rough or engine stalls, EGR system is functioning properly.
  5. Turn engine off. Remove EGR valve from vehicle. Connect a hand-held vacuum pump to EGR valve. Apply 20 in. Hg to EGR valve. If vacuum is maintained, go to next step. If vacuum is not maintained, replace EGR valve.
  6. Apply 2.5 in. Hg or less to EGR valve. Air should not pass through EGR passages. If air does not pass through EGR passages, go to next step. If air passes through EGR passages, replace EGR valve.
  7. Apply 6 in. Hg or more to EGR valve. Air should pass through EGR passages. If air passes through EGR passages, go to next step. If air does not pass through EGR passages, replace EGR valve.
  8. Remove EGR vacuum hose from intake manifold. Connect a vacuum gauge to intake manifold nipple. Start engine. Gradually raise engine speed and observe vacuum gauge. Vacuum signal should remain fairly constant. If vacuum signal remains fairly constant, EGR system is functioning properly. If vacuum signal is not fairly constant, inspect intake manifold inlet passage. Repair or replace components as necessary.
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