Remove / Install Throttlebody (MPFI Horizontal Intake)

Author: Jonathan Swain (aka "PurdueGuy")

Unfortunately some of the images for this guide were corrupted. Hopefully we’re able to replace them someday.

Relevant Models

1991-1992 SC
1995-2002 SC1
1993-1999 SC2
1995-2002 SL
1995-2002 SL1
1991-1999 SL2
1993-2001 SW1
1993-1999 SW2


  • Ratchet
  • 10mm? socket


Step 2

Remove Throttle Cable – While holding the cable, push & turn the quarter circle piece on the throttlebody so you can get some slack in the cable.  The end of the cable has a round knobby thing on it holding it into the quarter circle bracket.  Use the slack in the cable to turn the knobby piece so that it & the cable slide out of the quarter circle bracket.

Step 3

Remove Vacuum Block – This piece just unsnaps – be gentle.

Step 4

Remove Wiring Plug from Throttle Position Sensor (TPS) and Idle Air Control (IAC) Valve – Pretty straightforward unplug job – little clip on the side.

Step 5

Remove 2 Bolts – Use a ratchet & socket (metric – forget size) to remove these 2 bolts.  Once they’re out, just carefully take the throttlebody off the car – it should be somewhat loose, but may stick to the gasket a bit.


Installation is the reverse of removal.

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