Notice: Do not subject a throttle body assembly which contains the following components
to an immersion cleaner or a strong solvent:
• | Throttle position (TP) sensor |
• | Idle air control (IAC) valve |
• | Sealed throttle shaft bearings |
The cleaners will damage the electric components or sensors.
The cleaners will damage some of these components that contain seals or O-rings.
Solvents can wash away or break down the grease used on non-serviceable throttle
shaft bearings.
Never use a wire brush or scraper to clean the throttle body. A wire brush
or sharp tools may damage the throttle body components.
Do not use a cleaner that contains methyl ethyl ketone. This extremely strong
solvent may damage components and is not necessary for this type of cleaning.
Removal Procedure
- Disconnect the negative battery cable.
- Remove the air inlet duct
fastener and duct. Refer to
Air Cleaner Inlet Duct Replacement
.
- Disconnect the IAC valve and TP sensor electrical connectors.
- Disconnect the throttle, and cruise control cables. Refer to
Accelerator Control Cable Replacement
- Remove the accelerator cable bracket bolts and bracket.
- Remove the wiring harness
fastener nut and throttle body retaining studs
- Remove the throttle body
assembly.
- Remove the gasket and
discard.
Notice: Use care when cleaning the old gasket from the aluminum surfaces in
order to prevent damage to the sealing surfaces.
- Clean the gasket surface of the intake manifold.
Installation Procedure
- Install the new gasket.
- Install the throttle body
assembly.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the throttle
body retaining studs and wiring harness fastener and nuts.
Tighten
Tighten to 25 N·m (18 lb ft).
- Connect the throttle and cruise control cables. Refer to
Accelerator Control Cable Replacement
.
- Install the accelerator cable bracket and bolts.
- Connect the IAC valve and TP sensor electrical connectors.
- Install the air inlet
duct and retaining clamps.
Tighten
Tighten the nut to 2 N·m (18 lb in).
- Connect the negative battery cable.
- With the engine OFF, check to see that the accelerator pedal is
free. Depress the pedal to the floor and release.