Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2004 Toyota Avalon XLSFACTORY OEM SERVICE PROCEDURE

Throttle Body: Inspection

NOTE: In case of changing, removing or installing the throttle body or IAC valve, must do this.

INSPECT THROTTLE BODY
1. Check that there is no clearance between each throttle stop screw and the throttle lever when applying the vacuum (53.3 kPa (400 mmHg, 15.7 in.Hg)) to the throttle opener using a MITYVAC (Hand-Held Vacuum Pump).
  Standard: Must have no clearance
  
  Fig 1: Checking Clearance Between Each Throttle Stop Screw And Throttle Lever
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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