2003 Ford Crown Victoria Took Car Get Smog Fail Due Monitors Ready Cat Egr Codes

2003 FORD CROWN VICTORIA
120,000 MILES
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took car to get smog and fail due to monitors not ready cat and egr no codes light not on and vehicle has been driven over 500 miles can someone help?
Feb 19, 2013 at 5:18 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
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check fuel pressure first and change oil and filter. check air filter for cloggoing then drive about 20 miles on freeway before testing.
Feb 19, 2013 at 12:14 PM
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