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03 crown victoria cng weird idle and repetitive check engine light

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  • 03 crown victoria cng weird idle and repetitive check engine light

    Hi I recently bought a 03 Crown Victoria CNG. The car seems to have a very low idle. Feels like it could almost die when I come to a stop. Is this normal for a low emissions vehicle?
    The engine light came on and I took it into get it serviced. They said something about a bad coil and they replaced it and reprogrammed a modulator ?? (I don't know much about cars) Ran great for a few days and then the engine light came on again ?? Any ideas on what the issue could be?

  • #2
    Re: 03 crown victoria cng weird idle and repetitive check engine light

    Originally posted by kimharn View Post
    Ran great for a few days and then the engine light came on again ??
    You need to see what the new check engine light is for. Major chain auto parts stores will typically tell you what the code is for free.


    ?Innovation is driven by having access to things.? -- Gleb Budman, CEO of backblaze.com

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    • #3
      Re: 03 crown victoria cng weird idle and repetitive check engine light

      I've got an 03 Crown Victoria, also. How many miles on the odometer?

      If you go to a local car parts store (O'Reilly's, Schucks, etc.), you can borrow their code puller to plug in underneath your dash to find out what's throwing your check engine light.
      -----------------------------
      2003 Ford Crown Victoria CNG

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