Question about 2008 Toyota Sienna

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2008 sienna water pump replacement - 2008 Toyota Sienna

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  • jmlaesch
    jmlaesch Feb 23, 2012

    how too replace

  • jmlaesch
    jmlaesch Feb 23, 2012

    how to replace

  • Jeremy W.
    Jeremy W. Feb 23, 2012

    The water pump is timing belt driven. The timing belt will need to be removed in order to replace the timing belt. Are you sure your up for the challenge?

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For 2008, the water pump is not driven by the timing belt. Also, the motor does not have to be lifted. The haynes manual says to pull the ac unit, alternator, and drive axle, which is not required. Also, you do not have to lift the motor. I saw this on the net, which is incorrect for 2008 Sienna.1) Drain the system of anti-freeze2) take-off the passenger side front tire to get to the access panel, using a jack stand on the body.2) remove the access panel, and you should see most of the bottom bolts of the water pump3) do not remove the serpentine belt just yet, crack the bolts holding the water pump pulley, but do not remove them. If you remove the belt, you will be fighting against yourself to unloosen them later. 4) remove the serpentine belt (see youtube - a guy has a video of this piece which is easy)5) remove the top engine mount, which has about 4 bolts6) remove the aluminum bracket surrounding the thermostat housing which has about 7, and yes, some are long. 7) remove the thermostat housing, and disconnect the 3/4 hose in the back8) remove the belt tensioner pulley, by wrenching clockwise. 9) remove the 2nd serpentine pulley10) remove the 4 bolts for the water pump pulley11) remove the 16 bolts of the water pump12) reverse your order, and you should be good to go. Also, I replaced mythermostat, when the housing was out. Good Luck !

Posted on Jul 16, 2012

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