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EGR Pressure Transducer

  1. Check filter for any contamination and damage. Using compressed air, clean filter. Replace filter as necessary. See Fig 1.
  2. Remove 3 vacuum hoses from EGR pressure transducer. Place finger over one of 2 ports on top of EGR pressure transducer and blow into opposite port. If air passes through filter part of pressure transducer, go to next step. If air does not pass through filter part, replace EGR pressure transducer.
  3. Connect a hand-held vacuum pump to one of 2 ports on top of EGR pressure transducer and plug opposite port. Blow into bottom port and apply vacuum. While blowing into bottom port, vacuum should be shown on vacuum pump gauge. Stop blowing into bottom port. Vacuum should read zero. If vacuum cannot be obtained or does not release, replace EGR pressure transducer.
Fig 1: Testing EGR Pressure Transducer
G98G01088Courtesy of GENERAL MOTORS CORP.
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