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Engine Stall: Cold

  1. Check fast idle system. See IDLE CONTROL SYSTEM in SYSTEM/COMP TESTS article.
  2. Ensure engine has adequate compression.
  3. Perform appropriate test in INJECTOR MALFUNCTION diagnostic chart in SYSTEM/COMP TESTS article. Use DIAGNOSTIC CHARTS DIRECTORY table in SYSTEM/COMP TESTS article to locate chart.
  4. Check for spark using spark tester.
  5. Check spark plug for improper gap or fouling.
  6. Ensure fuel pressure is within specification.
  7. Check ECU harness connector.
  8. Check ECU power source and ground circuit. See ECU POWER SOURCE & GROUND diagnostic chart in SYSTEM/COMP TESTS article. Use DIAGNOSTIC CHARTS DIRECTORY table in SYSTEM/COMP TESTS article to locate chart.
  9. Try a known good ECU.