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Electronic EGR System: V8

  1. With engine cold and not running, connect a voltmeter to Gray wire at EGR solenoid. Set parking brake and start engine.
  2. Voltmeter should read less than 1 volt. This 1 volt reading should remain until engine has reached normal operating temperature and electronic EGR schedule has timed out.
  3. Solenoid will de-energize when EGR schedule has timed out. At this point voltage should read charging system voltage. If not, replace solenoid and repeat this test.
  4. If voltmeter indicates charging system voltage before EGR schedule is complete, replace computer or externally mounted timer.
    NOTE: Federal 5.2L 2-Bbl. engine has no coolant temperature thermal delay above 60°F (16°C) ambient temperature. It will follow EGR time delay schedule only.
  5. If engine is restarted while still at normal operating temperature, EGR solenoid will only be energized for length of time delay schedule. It will then de-energize.
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