Question about 2005 Nissan Altima

2 Answers

Engine rattle from timing chain - 2005 Nissan Altima

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  • Dave  C
    Dave C Jul 04, 2010

    If this is the 3.5L V6 engine There were two common problems that can cause this. This engine had
    problems with secondary timing chain tensioners that wore out and need
    to be replace at fairly low mileage. There will
    be a service bulletin regarding this repair and updated tensioners that
    must be installed. Unfortunately, your dealer is best suited to do
    this as it is a complicated job and you don't want a beginner doing it.
    Some shops may recommend doing the entire set of timing chains, but
    this really isn't needed, just the secondary tensioners. The other
    problem relates to small screws that can fall out of one of the many
    throttle plates inside the intake runners. I believe there is a
    bulletin regarding this problem as well. When the screw falls out, it
    is ingested into the engine and actually gets embedded in the piston and
    can sound just like a lifter as it comes up and bangs into the head.
    Unbelievably, the fix for this problem is to rev the engine sufficiently
    so that the screw gets hammered into the piston far enough so that it
    doesn't hit anymore, and then remove the intake to replace the screw(s)
    and locktite the rest of them. There is a fair bit of info on the web
    about this, google: "VQ35 noise" add "tensioner" if you like as well. Hope this helps, Dave

  • Lay Low
    Lay Low Nov 28, 2012

    im having the same problem with my car n i onle have 26k on my nissan maxima

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If this is the 3.5L V6 engine;

There were two common problems that can cause this. This engine had problems with secondary timing chain tensioners that wore out and need to be replace at fairly low mileage. There will be a service bulletin regarding this repair and updated tensioners that must be installed. Unfortunately, your dealer is best suited to do this as it is a complicated job and you don't want a beginner doing it. Some shops may recommend doing the entire set of timing chains, but this really isn't needed, just the secondary tensioners. The other problem relates to small screws that can fall out of one of the many throttle plates inside the intake runners. I believe there is a bulletin regarding this problem as well. When the screw falls out, it is ingested into the engine and actually gets imbedded in the piston and can sound just like a lifter as it comes up and bangs into the head. Unbelievably, the fix for this problem is to rev the engine sufficiently so that the screw gets hammered into the piston far enough so that it doesn't hit anymore, and then remove the intake to replace the screw(s) and locktite the rest of them. There is a fair bit of info on the web about this, google: "VQ35 noise" add "tensioner" if you like as well.

Posted on Jul 04, 2010

  • Dave  C
    Dave C Jul 05, 2010

    All the engines that were available in North America for this car in 2005, had timing chains. The 3.5L engines had a lot of trouble with their timing chain tensioners. The 2.5L engines were notorious for ingesting dust from their catalytic converters and prematurely wearing cylinders, causing oil consumption problems.

  • otishabarial Apr 07, 2011

    Is there anything that can be done about the consumtion of oil issue? I literally have to add oil every other week.

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  • 324 Answers

This engine doesnt have a timing chain it has a timing belt, check your oil level low oil presure could be causing valve clatter

Posted on Jul 04, 2010

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