Pass smog

Tiny
BADBOYBOSCO
  • MEMBER
  • 2003 MERCURY SABLE
  • 3.0L
  • 6 CYL
  • AUTOMATIC
  • 180,000 MILES
Even tho my check engine lite IS NOT on. It wont pass smog. It had a faulty thermostat. Replaced it and smog test comes back as INCOMPLETE. Even after putting on over 600 miles since replacing thermostat. What can I do?
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Tuesday, January 19th, 2016 AT 7:34 AM

2 Replies

Tiny
HMAC300
  • EXPERT
Change oil, oil and air fiters, drive about 20 miles on eway and see if that does it. Normally it does unless something else is wrong. Get it tested as soon as off eway if you can
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Tuesday, January 19th, 2016 AT 7:42 AM
Tiny
JOHNNYT73
  • EXPERT
Ok, have you checked your other components such as spark plugs, egr, air filter, and etc. Have you tried running any fuel system cleaners? You can still have the car scanned for history codes to see if there anything there.
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Tuesday, January 19th, 2016 AT 7:42 AM

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