Throttle Body Clean - N22A1

N22A1 - CTDi

  1. Nighthawk
    Difficulty Level:
     
    Simple
    Following Accord_N22 garage update, I decided to do a DIY for the cleaning of the throttle body because, as he said, there are no DIYs detailing this and its really simple too.

    TOOLS:
    - 12mm and 10mm spanner and sockets
    - Throttle cleaner
    - Clean rag
    - Lubricant

    Step 1:
    Remove the engine cover and disconnect the battery. There are four cables which need moving out of the way before the throttle body can come loose.

    Step 2:
    Remove the turbo intake air hose from the throttle body by removing the clamp and unclip the MAP and TPS sensor (circled in red). Loosen the 10mm bolt holding the MAP sensor in place as well.

    20160423_225854_1.

    Step 3:
    With 2 of the cables out of the way, you need to get the other 2. Luckily they are connected together and supported by the bracket above circled in green. This bracket is held into place by two 12mm nuts which is on the underside of the bracket. Once this is removed, the connector in green between the TPS and MAP can be moved out of the way.

    This is with the bracket removed, but shows the position of the nuts.

    20160423_230201_1.
    Step 4:

    Remove vacuum hose pipe from TB

    20160423_231143.

    Step 5:
    The throttle body itself is held into place with 3x 12mm bolts and 2x 12mm nuts. Only one of the bolts is in an awkward position underneath the throttle body on a bracket.

    20160423_235253.
    Remove the fasteners and pull the TB away being careful of the metal gasket. With this now removed, its much easier to see where the remaining 4 fasteners go. (You can also see the state of the oily residue.

    20160423_234431.
    Step 6:
    Remove the MAP sensor and start cleaning. Be careful of the TPS and the butterfly valve. Apart from that, spray and clean away.

    Mine went from this:

    20160423_232316.
    20160423_232331.
    20160423_232119.
    20160423_232159.

    Use the TB cleaner and use an old toothbrush to scrub all the residue away. With surprisingly a low amount of work, it cleaned and to look like this:

    20160423_234031_001.
    20160423_234044_001.

    Step 7:

    Clean up the metal gasket, or replace it if necessary, and clean the MAP sensor as per Accord_N22 DIY and reassemble everything.
    Accord_N22, Ichiban and SpeedyGee like this.

Recent Reviews

  1. Accord_N22
    Accord_N22
    5/5,
    Excellent write up nighthawk. An easy job with fantastic end results.
  2. DeviateDefiant
    DeviateDefiant
    5/5,
    Great write-up! She was just a bit carbony.
  3. wahabishtiaq
    wahabishtiaq
    5/5,
    Good write up!
  4. Nels
    Nels
    5/5,
    Great work Nighthawk. Thank you for sharing.
  5. legend-ary
    legend-ary
    5/5,
    Good stuff Nighthawk. Reckon one needs to do an idle relearn after this?
    1. Nighthawk
      Author's Response
      I didnt need to - the car just sorted itself out - it runs just fine and more responsive too
  6. SpeedyGee
    SpeedyGee
    5/5,
    Another great guide @NightHawk