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Engine feeling sluggish

Discussion in '1st Gen. Tacomas (1995-2004)' started by GA1044, Jul 6, 2009.

  1. Jul 6, 2009 at 9:15 AM
    #1
    GA1044

    GA1044 [OP] Well-Known Member

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    My friends 3.4l 4x4 trd is feeling sluggish. No codes popping up, but shifting ok but motor feeling underpowered. This is the truck that got water but have replaced the starter, alternator, MAF, GF, and 4WD computer. Any ideas what it might be. thanks in advance for suggestions
     
  2. Jul 6, 2009 at 1:58 PM
    #2
    GA1044

    GA1044 [OP] Well-Known Member

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    verdict: Timing Belt, replacing water pump since already in the way
     
  3. Jul 6, 2009 at 2:01 PM
    #3
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    good idea.....may wanna look at replacing seals in there too since you'll be in there, and depending on when the other belts were last changed, may be a good idea to change them too.
     
  4. Sep 22, 2009 at 6:15 PM
    #4
    machman

    machman Well-Known Member

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    So...the timing belt was the fix for it running sluggish?
     
  5. Sep 23, 2009 at 1:21 PM
    #5
    mcorbin

    mcorbin Member

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    No, it won't. The ONLY effect a T belt will have is 1. engine will not start/run (belt broken), or 2. running like complete crap (belt jumped a tooth, but not likely to happen). I would check standard items; plugs, fuel filter, air filter first.
     
  6. Sep 23, 2009 at 1:33 PM
    #6
    GA1044

    GA1044 [OP] Well-Known Member

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    It was the timming belt it had skipped a toothed got that rollers & waterpump replaced works like a champ, they also checked the fuel press regulator n said it might be next the pressure is a lil low
     
  7. Sep 23, 2009 at 2:12 PM
    #7
    mcorbin

    mcorbin Member

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    wow, I've been a Toyota mechanic for 7 years and have yet to see a 5VZ FE run "sluggish" that jumped a tooth. Learn something new everyday.:rolleyes:
     
  8. Sep 23, 2009 at 4:42 PM
    #8
    machman

    machman Well-Known Member

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    Thanks mcorbin. My truck feels like something is holding it back at full throttle. It seems fine any other time. I bought some Denso plugs today and will also get a fuel filter. I may also run some Seafoam through it.
     
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