Chevrolet Sonic Repair Manual: Throttle Body Inspection and Cleaning

Chevrolet Sonic Repair Manual / Powertrain / Internal Combustion Powertrain Control / Engine Control / Air Metering/Acceleration / 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:

Rear Seat Back Cushion Removal and Installation (60%)
Rear Seat Back Cushion Removal and Installation Callout Component Name Preliminary Procedure Remove the rear seat cushion. Refer to Rear Seat Cushion Removal and Installation. Remove the rear seat center retractor side be ...

Cylinder Head Disassemble
Special Tools EN-840 Pliers/Remover EN-8062 Valve Spring Compressor EN-8062-5 Adapter EN-50717-2 Compressor Assembly of EN-50717 Kit For equivalent regional tools, refer to Special Tools. Install the EN-50717?E assembly (1) to the EN-8062 compressor (4). Install the E ...

Fuel Injection Fuel Rail Assembly Replacement
Removal Procedure Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Remove engine cover. Refer to Engine Cover Replacement. Remove the fuel feed pipe from fuel injection fuel rail. Refer to Fuel Feed Pipe Replacement. Re ...

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