Chevrolet Sonic Repair Manual: Throttle Body Inspection and Cleaning
Note:
Over extended time and mileage, deposits may accumulate on the back of the throttle valve plate. The source of the deposit is exhaust gas. Typically these deposits pose no problem. Occasionally the deposit may accumulate to a point where perceived pedal effort or throttle valve movement is effected.
- Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
- Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces.
- Clean the throttle body bore and the throttle valve plate using a clean shop towel with an appropriate cleaner.
- Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
Throttle Body Heater Outlet Pipe Replacement (LUW)
Throttle Body Heater Outlet Pipe Replacement
Callout
Component Name
Preliminary Procedure
Drain the cooling system. Refer to Co ...
Throttle Body Installation
Install the throttle body (2) and a NEW throttle body
seal ring (1).
Caution: Refer to Fastener Caution.
Install the 4 throttle body bolts (3) an ...
Other materials:
Fog Lamp Aiming
Preparation Procedure
Note: Horizontal aim is not adjustable on this vehicle. Vertical
aim is done by an adjusting nut located on the rear of the fog lamp. Prior
to aiming the fog lamps, perform the following steps:
Completely assemble all of the components on the vehi ...
Tools and Equipment
Special tools are listed and illustrated throughout this section with a complete
listing at the end of the section. These tools, or their equivalents, are specially
designed to quickly and safely accomplish the operations for which they are intended.
The use of these special tools will also mi ...
Cooling Fan Description and Operation (LUV)
The engine cooling fan system is composed of one cooling fan, a series of 5 relays,
the engine control module (ECM), and the associated wiring. The cooling fan assembly
includes two resistors. This combination of components enables the ECM to operate
the cooling fan at 3 speeds usi ...
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