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Except Talon Turbo

1997 

  1. Turn off all accessories. Start engine. Allow engine to warm to more than 170°F (77°C). Disconnect Exhaust Gas Recirculation (EGR) solenoid electrical connector. Leave EGR electrical connector disconnected for remainder of test.
  2. Disconnect vacuum supply hose from EGR solenoid. Connect a vacuum gauge to disconnected hose. If vacuum gauge indicates more than 10 in. Hg vacuum, go to next step. If vacuum gauge indicates 10 in. Hg vacuum or less, repair vacuum supply to EGR solenoid.
  3. Record vacuum reading. Reconnect vacuum hose to EGR solenoid. Disconnect vacuum hose from EGR valve. Connect a vacuum gauge to disconnected hose. If vacuum gauge reading pulsates, go to next step. If vacuum gauge reading does not pulsate, go to step 6).
  4. While observing vacuum gauge, momentarily raise engine speed to more than 2000 RPM. If vacuum gauge reading stabilized, go to next step. If vacuum gauge reading did not stabilize, replace EGR valve assembly.
  5. Turn engine off. Remove EGR valve. Inspect manifold and tube for restrictions. If any restrictions were found, repair as necessary. If no restrictions were found, replace EGR valve assembly.
  6. Reconnect hose to EGR valve. Disconnect backpressure hose from EGR transducer. Connect a pressure gauge to backpressure hose. If pressure gauge reading is not pulsating, go to next step. If pressure gauge reading is pulsating, replace EGR assembly.
  7. Inspect exhaust system for a sizable leak. If no leaks were found, go to next step. If any leaks were found, repair exhaust system as necessary.
  8. Inspect EGR valve mounting area, EGR valve tightness and EGR valve gasket. Repair or replace EGR valve as necessary. If no repairs were necessary, go to next step.
  9. Replace EGR valve assembly.

1998 

  1. Turn off all accessories. Start engine. Allow engine to reach operating temperature. Disconnect Exhaust Gas Recirculation (EGR) solenoid electrical connector. Leave EGR solenoid electrical connector disconnected for remainder of test.
  2. Disconnect vacuum supply hose from EGR solenoid. Connect a vacuum gauge to disconnected hose. If vacuum gauge indicates more than 10 in. Hg vacuum, go to next step. If vacuum gauge indicates 10 in. Hg vacuum or less, repair vacuum supply to EGR solenoid.
  3. Reconnect vacuum hose to EGR solenoid. Disconnect vacuum hose from EGR valve. Connect a vacuum gauge to disconnected hose. If vacuum gauge reading pulsates, go to next step. If vacuum gauge reading does not pulsate, go to step 6)  .
  4. While observing vacuum gauge, momentarily raise engine speed to more than 2000 RPM. If vacuum gauge reading stabilized, go to next step. If vacuum gauge reading did not stabilize, replace EGR valve assembly.
  5. Turn engine off. Remove EGR valve. Inspect manifold and tube for restrictions. If any restrictions were found, repair as necessary. If no restrictions were found, replace EGR valve assembly.
  6. Reconnect hose to EGR valve. Disconnect backpressure hose from EGR transducer. Connect a pressure gauge to backpressure hose. If pressure gauge reading is not pulsating, go to next step. If pressure gauge reading is pulsating, replace EGR assembly.
  7. Inspect exhaust system for a sizeable leak. If no leaks were found, go to next step. If any leaks were found, repair exhaust system as necessary.
  8. Inspect EGR valve mounting area, EGR valve tightness and EGR valve gasket. Repair or replace EGR valve as necessary. If no repairs were necessary, replace EGR valve assembly.

1999 

  1. Turn ignition on with engine off. Using scan tool, read DTCs. If GLOBAL GOOD TRIP displayed is zero, go to step  3. If GLOBAL GOOD TRIP is not zero, go to next step.
  2. At this time the EGR system failure does not exist or is an intermittent problem. Using scan tool, read FREEZE FRAME data. Attempt to duplicate the condition that causes DTC to be set. While using FREEZE FRAME data, pay attention to the conditions such as vehicle speed, temperature, load and MAP sensor vacuum. If EGR system failure reoccurs, go to next step. If EGR system failure does not reoccur, misfire no longer is present.
  3. Turn off all accessories. Start engine and allow to reach normal operating temperature. Disconnect EGR solenoid vacuum supply hose. Connect a vacuum gauge to disconnected hose. If vacuum is more than 10 in. Hg, go to next step. If vacuum is 10 in. Hg or less, repair vacuum supply to EGR solenoid.
  4. Reconnect vacuum hose to EGR solenoid. Disconnect EGR valve vacuum hose. Connect a vacuum gauge to disconnected hose. If vacuum gauge pulsates, go to next step. If vacuum gauge does not pulsate, go to step  7.
  5. While observing vacuum gauge, momentarily raise engine speed to more than 2000 RPM. If vacuum gauge stabilized, go to next step. If vacuum gauge did not stabilize, replace EGR valve assembly.
  6. Remove EGR valve and inspect manifold and tube for restrictions. If any restrictions are present, repair or replace manifold and tube as necessary. If restrictions are not present, replace EGR valve assembly.
  7. Inspect exhaust system for a sizeable leak. If a leak was not found, go to next step. If a leak was found, repair as necessary.
  8. Reconnect hose to EGR valve. Disconnect backpressure hose from transducer. Connect a pressure gauge to backpressure hose. If pressure gauge is not pulsating, go to next step. If pressure gauge is pulsating, replace EGR assembly.
  9. Inspect EGR mounting. Check valve tightness and valve gasket. If any problems were identified, repair as necessary. If any problems were not identified, replace EGR valve assembly.
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