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Your check engine light is on on your 2004 Ford Ranger what could be wrong it is running good?
Wiki User
∙ 15y ago
It is most likely an emissions issue and the computer on the truck has detected information from one of the sensors on the engine that something is not within its normal working range. A small amount of contamination on a sensor or a small vacuum leak somewhere can set the CEL (among many other things). Auto Zone will hook to your computer with a code scanner for FREE and tell you what trouble the computer has found. They can also give you a print-out of the results to take with you on their receipt paper. It will probably not be anything too serious. Don't take their recommendation for repair as gospel, they are COUNTER HELP...not mechanics. Post back on here or in a tech forum for more help after you have the number of the code(s).
Wiki User
∙ 15y ago
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