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Old 09-23-2011, 05:09 PM   #1
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check engine light flashes

New here, but have already received a wealth of knowledge by just lurking. Have not found an answer to the following, however:
2002 wrangler, 4.0 auto.
The check engine light will flash three or four times, then it will stay unlit for a couple of weeks. Then, it may do it again. Have found no codes via the odometer check.

Any suggestions? Thanks in advance.

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Old 09-23-2011, 08:24 PM   #2
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did you hook it to a OBD2 reader to see what codes it is throwing. If you dont have one go to your local autozone and they will hook it up for you

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Old 09-23-2011, 08:29 PM   #3
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You can always disconnect your battery over night to clear your codes and if it continues to flash then go to a parts store to have them read it
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Old 09-23-2011, 09:44 PM   #4
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If it isnt an electrical gremlin, the check engine light only flashes for one reason..Something is damaging the catalytic converter..which usually means a misfire..I would check you plugs first and go from there..
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Old 09-24-2011, 06:35 AM   #5
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thanks all for the advice. The local autozone will be visited this morning, hopefully with some insight.
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Old 09-24-2011, 07:25 AM   #6
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You can read the codes yourself. Turn the key from OFF-ON-OFF-ON-OFF-ON and the codes will display in the odometer window.
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Old 09-24-2011, 08:04 AM   #7
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I did that, and no codes show. Hence, the confusion. I am thinking along the lines of a loose connection on a sensor somewhere.

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