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

  1. Firstly Disconnect  battery
    • 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

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

    • Locate throttle linkage cable assembly.

    • Twist the assembly clockwise.

    • Slide both slackened cables off assembly’s guides.

    • Locate the two hoses on the top of the throttle body.

    • Gently lift the hoses off.

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

    • Remove the intake tube from the throttle body.

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

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

    • Locate throttle linkage arm.

    • Open the locking clip with a flat head screwdriver.

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

    • Locate the three 13mm nuts attaching the throttle body to the intake manifold.

    • Remove nuts with a 13mm crescent wrench.

    • Lift the throttle body off of the intake manifold.

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

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

    • 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.

    • 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.

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


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


Member since: 11-10-2010

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Cal Poly, Team 3-28, Regan Fall 2010 Membro de Cal Poly, Team 3-28, Regan Fall 2010


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