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I believe it is blinking because there is a misfire inside the engine. Meaning that the timing is off. This could be because the timing belt may be old and the teeth are chewed and are not as rigid. That was the case for my 96 tacoma.

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2006-05-26 20:05:31
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Q: If the check engine light on a 2000 Toyota Sienna is blinking what are the possible causes?
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