3rd Gen Removing the Thermowax From Your FD3S Throttle Body


Removing the Thermowax From Your FD3S Throttle Body​


Time Investment: ~45 minutes
Difficulty: Low (Medium if screw heads strip)

Tools:
Phillips #2 Screwdriver (JIS +2 preferred)
Straight Pick, or Snap Ring Pliers, or a Flathead Screwdriver
12mm Socket
Ratchet
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Information:
  • For this guide it is assumed that you have removed the throttle body off the car already
  • An electric impact driver with a Phillips #2 helps with removing screws that won't budge
  • If you strip a screw some heavy duty pliers may still enable it to be removed (I use Knipex)
  • I recommend changing the screws you remove out to Hex Socket Button Head M5's

Steps:
1. Remove the Throttle Position Sensor (TPS) from the Throttle Body with a screwdriver.
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2. Remove the primary Thermowax component from the Throttle Body with a screwdriver.
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3. Remove the TPS Housing by removing the two screws with your screw driver and the M8 nut with your Ratchet and 12mm Socket.
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4. Remove the Snap Ring by prying up with a Straight Pick or a Flathead Screwdriver.
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5. Remove the thin Spring Arm by prying it out and under the Metal Bracket with a Straight Pick then remove the spring assembly.
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6. Reassemble the TPS Housing and TPS Sensor (The TPS Sensor will need re-adjusted when on the car).
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7. Before you re-install the Throttle Body make sure you re-locate the Coolant Line that was going to the Throttle Body to the hard line on the Rats Nest Assembly.
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