08 x runner driver side cam phaser (vvt gear ) replacement .

Discussion in 'Stock Performance/Mechanical' started by C10Ben, May 16, 2017.

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  1. C10Ben

    C10Ben New Member

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    Vvt intake gear was good ! The tensioner for the chain between the intake and exhaust cam had completely failed . Replacing vvt intake gear while
    I'm in here ..... TENSIONER WAS CULPRIT !!!!!!!
     
  2. Gadget

    Gadget Well-Known Member

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    How did it fail? Pictures?
     
  3. C10Ben

    C10Ben New Member

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    Going to take pics now . Here is the part number that failed- 13560-AD010 ... literally holding zero tension. My driver side exhaust cam is off 1 tooth .
     
  4. C10Ben

    C10Ben New Member

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    I have a video I posted on the Facebook x runner owners page as well . Said it was to large. To post
     

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  5. o0opackersfano0o

    o0opackersfano0o Active Member

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    Install ucon while ur there. Lol
     
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  6. C10Ben

    C10Ben New Member

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    You speaking my language . Labor is free so. I don't mind
     
  7. SgtBadA

    SgtBadA Active Member

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    I've never seen one of those fail before. I mean anything is possible but I didn't expect to see that
     
  8. C10Ben

    C10Ben New Member

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    Me either. I tested it next to another one I had( separate Tacoma engine , wish I could rob lol) and it seems the tensioner. Just won't hold any oil pressure . the dealer should have my parts in tomorrow and I will be reassembling .
     
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  9. SgtBadA

    SgtBadA Active Member

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    Cool deal I'm sure it will run a lot better with the new parts
     
  10. C10Ben

    C10Ben New Member

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    Truck is back together . Did first test drive tonight . Little over 20 miles . Smoothest idle I've had since owning truck . Much more responsive. All live data reading well and no pending codes present . So far so good !!!!
    This weekends goal is to swap transmission and rear end with the redline fluids .
     
  11. Torspd

    Torspd Moderator
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    Here is a picture showing the bolt for the screen on the head.

    20160625_144255.jpg
     
    #31 Torspd, Jun 1, 2017
    Last edited: Jul 3, 2017
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  12. SgtBadA

    SgtBadA Active Member

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    Engine looks clean. Did you just rtv it back together?
     
  13. C10Ben

    C10Ben New Member

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    Yes . Roll locked mating surfaces and. Used the permatex grey . New water pump gasket of course .
     
  14. FinnJ

    FinnJ New Member

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    Do I have the same failure? See my video:

    I started to get P0012 code recently, almost every driving time.
     
  15. C10Ben

    C10Ben New Member

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    Hard to say . My original video was corrected by gadget informing me the passenger bank tensioner actually facing down. So that's why it has no play on that side unless you press from the bottom . In my case . It wasnt holding the tension even under pressure and I had jumped 1 tooth . Can you put it on top dead center and show us our timing marks ?
     
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  16. C10Ben

    C10Ben New Member

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    P0012 is actually related to the camshaft timing though . Could be bad vvt . I replaced mine while I was in there but I never had a timing code . I was getting random multiple cylinder misfires just in that bank . Bcuz the exhaust valves weren't quite closing all the way (1 tooth )
     
  17. FinnJ

    FinnJ New Member

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    Yes, noticed it (passenger side is upside down). It felt similar, so I think they are good to go.

    And P0012 is also for passenger side = Bank 1. The OCV and filter for it are clean and the valve works ok and ohms are ok. Maybe something related to Unichip tune I have/had. Now changing to UCON.
     
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  18. Gadget

    Gadget Well-Known Member

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    The tensioners always will push on the slack side of the chain. With the way the engine rotates, the slack side on the passenger side is down. On the driver's it is up.

    Same way on belts. Watched a "super legend" in the industry be baffelled why his S2000 supercharger kit lost boost at high RPM. He had his tensioner on the pull side of the belt because that is how Honda had it. Honda did that specifically to cause slip at high RPM for power and unload the accessories. Won't work when you really need to drive something.
     
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  19. Torspd

    Torspd Moderator
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    That was when I was assembling my 4.3L stroker engine.
     

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