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P1410 – EGR Vacuum Regulator Stuck Open

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Symptoms

  • Rough idle
  • Stalling
  • Hard starting

Causes

  • Stuck regulator
  • Vacuum leak
  • ECU issue

Diagnosis

  • Test regulator
  • Inspect vacuum lines
  • Scan ECU

Repair

  • Replace regulator
  • Repair vacuum leaks
  • Update ECU
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