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2003 Dodge Grand Caravan Question: check engine light on, shows replace gas cap !!

 

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Aehone, Peyton, CO, June 18, 2011, 20:27
 Rookie

Check engine light on, says to replace gas cap, did that.. 1300 miles later, check engine light came on again, says to replace gas cap ??? any suggestions ??

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  • Medium-star Best Answer
    fernando June 18, 2011, 21:39
     Master

    Tighten gas cap until you hear couple "clicks".

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  • Answer #2

    Visitor, June 20, 2011, 08:33

    The system has detected a leak in the evaporative system and it wants you to check your gas cap since that is the most common reason for an evaporative system leak. If the cap is ok then more than likely you have a leak that is not contributed to the fuel cap. The computer has no way to physically check the fuel cap, it can only assume the possibility that you may have left it off.

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  • Answer #3

    Top Tech Automotive from Top Tech Automotive, June 20, 2011, 09:21
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     Enthusiast

    The system has detected a leak in the evaporative system and it wants you to check your gas cap since that is the most common reason for an evaporative system leak. If the cap is ok then more than likely you have a leak that is not contributed to the fuel cap. The computer has no way to physically check the fuel cap, it can only assume the possibility that you may have left it off.

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