Question about 2001 Toyota Sienna

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2004 Toyota Sienna, where are the spark plugs?

How is the best way to get to them, underneath or from the top?

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The Front ones will come out from the Top. If the Rears are Covered, It will be easier from Underneath. Not as easy as the Old Chevelles and Camaros of Yesterday!

Posted on Jan 23, 2009


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How do i do an idle relearn on a 04 toy sienna

make sure you have no vacuum leak.
then disconnect the battery for 5 minutes then drive it normally with ac on

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1 Answer

How can I replace the spark plug for my toyota sienna 2006

Hi. Here's the procedure on how to change the spark plugs.

  • Step 1 Connect the spark plug socket to the socket extension.
  • Step 2 Open the hood and pull the spark plug wires off the top of the engine. You may need to wiggle them back and forth while pulling up on the plug wires in order to remove them.
  • Step 3 Lower the spark plug socket into the engine and push the socket over the top of the spark plug.
  • Step 4 Turn the spark plug counterclockwise with a socket wrench to loosen and remove it from your Sienna's engine.
  • Step 5 Pull the old spark plug out of the socket and insert a new spark plug into the socket with the electrodes facing out.
  • Step 6 Lower the spark plug into the engine and thread and tighten the spark plug.
  • Step 7 Slide the plug wire down into the plug well and push it over the top of the spark plug until it seals the plug. The wire should fit nice and snug over the spark plug.
  • Aug 15, 2010 | 2006 Toyota Sienna

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    2006 Toyota Sienna spark plug replacement. Where are the plugs located?

    The spark plugs are under the plastic cover on top of the valve covers.

    Jun 23, 2010 | 2006 Toyota Sienna

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    Rear spark plug replacement on sienna 04

    a rachet a extenion and a swivel go from under the van make sure you check the gap

    May 04, 2010 | 2004 Toyota Sienna

    1 Answer

    The front 3 plugs are easy, what about the other 3. How to replace the SPARK PLUGS in a 2005 Sienna. Step by step please.

    The EASIEST and BEST way to access the rear sparkplugs is to pull the plenum.

    But, if you do that, you will need to replace the plenum gasket, as it is not reusable.

    My flat rate guys pull the plenum every time they replace the plugs, all 6 takes them about 20 minutes.

    Dec 05, 2009 | 2004 Toyota Sienna

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    Do i have to take off the air intake to take off the spark plug

    By the book, you are supposed to remove the upper intake and the cowl to do the spark plugs. This is why the labor is about 2 hours.

    You can however remove the plugs without doing this, but if you have large arms, you are going to have a problem. i have relatively thin forearms and still get a little scratched up.

    Regarding the rear (hard to do) ones:

    I remove the intake hose and top of air cleaner, then access the 10mm bolts on the coil packs from behind the throttle body. The coil packs will just barely clear the manifold.
    Then i drop a 8" 3/8 extension with 5/8" rubber sleeved plug socket into the hole.
    Then go back in with a small ratchet to break them loose.
    Take the ratchet back off and unscrew the rest of the way by hand.
    The #1 cylinder is often easier to do from the passenger side though.

    Sep 18, 2009 | 2004 Toyota Sienna

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    Releasing 2005 Toyota Sienna spare tire

    On my 2004 toyota,,,directly behind the passenger side front seat (have to push passenger seat all the way forward to see it, there is a small square flap in the carpet,,,lift that up and underneath is a big bolt which you turn counterclock wise with your spare tire lug wrench and the tire will lower to the ground. thats about it. good luck

    Aug 29, 2009 | 2004 Toyota Sienna

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