intermediate CEL on with loss of power - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-20-2009
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intermediate CEL on with loss of power

99 Ford Ranger XLT (Flex)
When going up a hill the Check engine light comes on and the power drops off. Any ideas s to why? There are no codes stored in the computer and once over the hill the CEL goes off and power comes back
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Old 06-20-2009
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Is the CEL flashing?
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Old 06-20-2009
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No, It comes on steady
but now that you brought it up what does the flashing mean even.
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Old 06-21-2009
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A flashing CEL means that the PCM is detecting misfire in real time. If it goes on long enough during 2 successive drive cycles, a trouble code will be stored.
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Old 06-21-2009
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I'm willing to bet that you are having a misfire, and that a change of spark plugs and possibly wires would fix your problem.

It could be a lot of things, though. If it comes back, hopefully the code gets stored.
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Old 06-21-2009
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Thanks guys,
I put in new plugs today and so far no problems.
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