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Home >> Ford >> 1990 >> Probe GL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EEC-IV >> Emissions/Sub-Systems Checks - EGR Systems >> Electronic EGR Valve (EEGR)
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Electronic EGR Valve (EEGR)

  1. Ensure all vacuum hoses are correctly routed and securely attached. Replace any crimped or broken hoses. Ensure there is less than 2.5 in. Hg of vacuum to EGR valve at idle with engine at normal operating temperature.
    NOTE: EVR solenoid has a constant internal leak. You will notice a small vacuum signal of less than 1.0 in. Hg of vacuum at idle.
  2. Install tachometer. Disconnect idle air by-pass valve electrical connector (1.9L CFI engines only). Remove and plug vacuum hose at EGR valve. Start engine and idle in neutral. Note idle speed. Using hand vacuum pump, slowly apply 5-10 in. Hg of vacuum to EGR valve. When vacuum is fully applied to EGR valve, engine should do one or more of the following:
    • Engine should stall
    • Idle speed should drop more than 100 RPM
    • Idle speed should return to normal when vacuum is released
  3. Repair or replace EGR valve if none of the above occurs. Reconnect idle air by-pass valve electrical connector. Unplug and reconnect vacuum hose at EGR valve.
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