Question about Toyota Sienna

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When we turn on our 2000 Toyota Sienna van everything sounds fine but the minute we put it into reverse to back out of our gararge it makes kind of a high pithced noise and it kind of sputters when we step on the gas. If we put it back in park the noise stops. Also the check engine light will come on and stay on and some times it will blink off and on. We can also hear the noise if we put the van in drive and you can feel the sputter in drive also. Any ideas before I take to the dealer and pay big $$

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  • If the sound you're refering to is a screaching sound, the PK belt may be worn and slipping....The PK belt is the new type of fan belt used these days....Its flat and has groves that go around the whole length. The number of grooves give the PK number and the length is indicated usually in inches and centimeters....

    When running correctly it should be tight and when pressed have little or no play....I'm assuming you don't have a gauge to test with. On top of the alternator ythere is an adjusment bolt....To adjust, get a light and shine it on top of the alternator....You'll see a locking nut behind the front bracket of the main body....Loosen that first and then chave a look at the condition of the belt....If it needs replacement a good idea is to make a drawing of the lacing before you remove it....If its loose and cracked you'll need a new one, if not tighten it via the adjuster at the top of the bracket....When your done, tighten the locking nut again....The misfire or jerking may be coming from a low voltage output from the alternator....

    If this info is not what your looking for, let me know and we'll go deeper, but I'll need more info from you....Regards Johngee10



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Before you take it to the dealer, take it to an independent shop to diagnose it. they will charge you a lot less. A scanner can be hooked up to diagnose the problem. You do not have to take it to the dealer, for there are shops that are just as qualified to repair your vehicle. They will have certified techs and equipment to diagnose it.

Posted on Oct 16, 2010


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