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Old 11-21-2009, 03:34 PM #1
boscounderfoot boscounderfoot is offline
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89 V6 4runner check engine light question
My check engine light comes on only after the truck has been warmed up sufficiently. No stumble or loss of power, no unusual smells, smoking or anything else. Just the light. This wouldn't be a big deal, but I have to E-test in Colorado and the check engine light is an automatic failure here. Has anyone out there experienced anything similar to this?

Thanks in advance.
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Old 11-22-2009, 10:52 AM #2
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Do you know how to check the codes?
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Old 11-24-2009, 05:36 PM #3
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Jumper with the paper clip yielded a code 21.......O2 sensor right?
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