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2002 Toyota Sequoia

Question: What is the cause of a P0302 misfire detected code?

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jcdudley, 4.7L V8, Cottage Grove, MN, December 27, 2011, 09:33
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I changed the spark plugs but no change.

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  • Answer #1

    mastertech6371 December 27, 2011, 09:40
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    could be plugs, coil boot, coil, vacuum leak, injector or control or compression issue.

    get a shop to check the basics for you and give you a bid.

    Roy

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  • Answer #2

    Jlleveille March 10, 2012, 05:09
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    I would check the coil pack. Easy test. Swap it with a different cly. If the code follows to the new cyl then coil pack is bad. Happened to my 2001.

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