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EGR Function Testing Dodge Dynasty I

Testing & Diagnostics ~180 words

NON-TURBO

  1. Check vacuum hoses for correct routing. Warm engine to operating temperature. Some models with EGR delay timers must run for at least 1-2 minutes before EGR works.
  2. While observing EGR valve stem, abruptly accelerate engine to 2000-3000 RPM. EGR valve stem should move at least 1/8". Repeat test to confirm operation.
  3. Connect a hand-held vacuum pump to EGR valve. Idle engine and gradually apply at least 10 in. Hg. EGR valve stem and diaphragm should move smoothly and engine speed should drop at least 150 RPM. If engine speed does not drop, check for plugged EGR passage.

TURBO

  1. Check vacuum hoses for correct routing. Ensure engine is at normal operating temperature. Connect a hand-held vacuum pump to EGR valve. With engine idling, slowly apply 2-3 in. Hg. Engine RPM should drop when vacuum is applied.
  2. Disconnect vacuum pump from EGR valve. Connect vacuum pump to EGR vacuum supply hose. Start engine and raise engine speed to 2000 RPM. Vacuum gauge should read about 5 in. Hg. If test results are as specified, system is functioning correctly.

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