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Clean Throttle Body & MAFS??

Discussion in '1st Gen. Tacomas' started by NYProud, May 15, 2012.

  1. NYProud

    NYProud [OP] Member

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    Chief
    OKC, OK
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    I'm wondering if any of you guys make cleaning the throttle body and Mass Air Flow Sensor (3.4 V6 5VZ engine) a regular maintenance step.

    Is it a critical step, and if so, how often should it be done. I wanted to attempt it but, I read the MAFS is really delicate to mess with, and I have never tried to remove the throttle body.

    Would appreciate any information you can provide. My`98 Taco TRD 4x4 just went over 179K miles, and I'm trying to do everything I can to tweak performance....Thank you, as always...Chief
     
  2. ffirg

    ffirg Well-Known Member

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    Cleaning the MAF is very easy to do. Just unplug the wiring harness it connects to and remove two screws. Pull it out and spray it down with some MAF cleaner. Just do not touch any part of the sensor itself. Not with the spray tube or your fingers. Let it dry and put it back together.

    I have not cleaned the TB yet, but it seemed pretty straightforward from a write up I saw on here.
     
  3. Taco me elmo

    Taco me elmo Who needs roads?

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    I clean both after each desert trip and every 10k miles or so.
     
  4. whippersnapper02

    whippersnapper02 Well-Known Member

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    Make sure you use actual MAF cleaner and Throttle Body cleaner.
     
  5. Taco me elmo

    Taco me elmo Who needs roads?

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    MAF

    [​IMG]

    TB

    [​IMG]
     
  6. whippersnapper02

    whippersnapper02 Well-Known Member

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    ^^^^Yup but I don't use seafoam. I use throttle body cleaner.
     
  7. Taco me elmo

    Taco me elmo Who needs roads?

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    That is throttle body cleaner, its by seafoam and does a better job than the run of the mill throttle body spray.
     
  8. whippersnapper02

    whippersnapper02 Well-Known Member

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    Ah. I thought it was just plain old seafoam. I won't run the original crap in my intake.
     
  9. Taco me elmo

    Taco me elmo Who needs roads?

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    Yeah my truck runs funny if i do it into the vacuum line. I run half a can in the gas sometimes..
     
  10. boshak

    boshak Well-Known Member

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    CRC also makes a TB cleaner spray. I use that and the CRC MAF cleaner.

    Like mentioned above, do not touch the sensor with anything but spray. Also, clean out the carb in the MAF ring.

    Throttle body is straight forward... I removed mine so I could clean behind the butterfly plate and not get gunk in my IAC holes. 2 screws, 2 nuts, and 3 sensors to do this. If you do this, replace the gasket. A toothbrush is extremely helpful!
     
  11. whippersnapper02

    whippersnapper02 Well-Known Member

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    I ran it on my Ranger but I didn't think that when you run it through the vacuum line all that crap in the intake manifold is going into the cylinders. Not real good for the rings.
     
  12. CliffordBRD

    CliffordBRD Well-Known Member

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    I just did mine not long ago, really helped out the idle stumble. Do it all at once if you do it, since the intake tube will already be disconnected from the mafs, might as well pull the other end. Mine was near black all around, took some work, but looks like new now!

    Good luck
     
  13. boshak

    boshak Well-Known Member

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    Some TB pics before and after... Front and back... You can see the build up on the backside which is why I remove mine when cleaning. And yes I cleaned up the mating surface before reinstalling :)

    [​IMG]
     
  14. boshak

    boshak Well-Known Member

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    ^^^ this
     
  15. Dek Ngo

    Dek Ngo Well-Known Member

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    What's the part number for this gasket?
     
  16. TacomaJPP

    TacomaJPP To secure peace, is to prepare for war

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    Whenever I do my timing belt, I pull the TB and clean it. At the same time, I replaced the "D" shaped gasket with the supercharger gasket ("O" shaped, ie, more air flow). I did my first timing belt at 130,000 and the TB wasn't too dirty. I would say that it won't need it that often unless you are a desert runner type, like someone mentioned above.
     
  17. boshak

    boshak Well-Known Member

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    I recommend asking your Toyota parts rep. Give him your VIN to be 100% sure.

    I've used engine part numbers from forums in the past and came to realize there were subtle differences even with similar engine types. For example, ECTS throttle bodies implemented in 2003, manuals vs autos, 4w vs 2w.

    Just my preference... Helps ensure I do the job once.
     
  18. boshak

    boshak Well-Known Member

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  19. Muscles

    Muscles Well-Known Member

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    use what?
     
  20. boshak

    boshak Well-Known Member

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