Introduction

This manual provides instructions on how to clean the tube and butterfly valve of the throttle body as well as clean and protect the electrical contacts

Image 1/2: '''Always''' take the '''negative''' terminal off first. Image 2/2: ''''''General Tip'''                                  After disconnecting the battery leave the car for about 10 mins , This lets any residual energy left in the electrical system to dissapate. It is good practise whatever the job
  • Firstly Disconnect battery

    • Always take the negative terminal off first.

    • '''General Tip After disconnecting the battery leave the car for about 10 mins , This lets any residual energy left in the electrical system to dissapate. It is good practise whatever the job

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  • Locate throttle body on right side of engine, it is between the intake tube and intake manifold.

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  • Locate throttle linkage cable assembly.

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  • Twist the assembly clockwise.

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  • Slide both slackened cables off assembly’s guides.

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Image 1/2: Gently lift the hoses off. Image 2/2: Gently lift the hoses off.
  • Locate the two hoses on the top of the throttle body.

  • Gently lift the hoses off.

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  • Use a flat head screwdriver to loosen the hose clamp attaching the intake tube to the throttle body.

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  • Remove the intake tube from the throttle body.

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  • Locate wiring clip on the underside of the throttle body.

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  • Press down on the locking mechanism before gently removing the wiring clip.

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Image 1/3: Open the locking clip with a flat head screwdriver. Image 2/3: Pry off the linkage arm with a flat head screwdriver. Image 3/3: Pry off the linkage arm with a flat head screwdriver.
  • Locate throttle linkage arm.

  • Open the locking clip with a flat head screwdriver.

  • Pry off the linkage arm with a flat head screwdriver.

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Image 1/3: Remove nuts with a 13mm crescent wrench. Image 2/3: Remove nuts with a 13mm crescent wrench. Image 3/3: Remove nuts with a 13mm crescent wrench.
  • Locate the three 13mm nuts attaching the throttle body to the intake manifold.

  • Remove nuts with a 13mm crescent wrench.

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Image 1/1: The manifold is now out of the engine bay and ready for cleaning or adjustment.
  • Lift the throttle body off of the intake manifold.

  • The manifold is now out of the engine bay and ready for cleaning or adjustment.

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  • Cover the electrical contacts with a shop towel to prevent throttle body cleaner from inadvertently spilling over.

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Image 1/1: Use a shop towel sprayed with cleaner to wipe off thick grime if severely dirtied.
  • Liberally apply throttle body cleaner to the inside of throttle body and butterfly valve.

  • Use a shop towel sprayed with cleaner to wipe off thick grime if severely dirtied.

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Image 1/2: Spray off the wiring clip that attaches to the throttle body inside the engine bay. Image 2/2: Spray off the wiring clip that attaches to the throttle body inside the engine bay.
  • Spray electrical cleaner on the metal contacts to blast away particles in the bracket.

  • Spray off the wiring clip that attaches to the throttle body inside the engine bay.

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  • Apply a small amount of dielectric grease to the metal contacts to prevent corrosion.

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Conclusion

To reinstall the throttle body after cleaning follow reverse directions for prerequisite guide #2

Raymond

Member since: 10/11/2010

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2 Guides authored

Team

Cal Poly, Team 3-28, Regan Fall 2010 Member of Cal Poly, Team 3-28, Regan Fall 2010

CPSU-REGAN-F10S3G28

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