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SUBJECT:
THROTTLE BODY CLEANING
This bulletin provides information relating to throttle body and plate cleaning on all Kia models. Residue from fuel additives and/or carbon deposits that result from normal fuel combustion can accumulate on the throttle body and/or upper combustion chamber over time. Dirty throttle bodies can cause a variety of vehicle drivability concerns and may result in MIL illumination under certain circumstances.
When the engine is started, the incoming air sometimes carries residue back to the throttle body and deposits it just behind the throttle plate because of the sudden drop in air pressure behind the plate.
When the engine is running, crankcase vapors enter through the PCV system and work their way into the intake system. These vapors carry with them residue which accumulates on the idle passages and throttle plate. This build-up eventually blocks the air gap between the throttle plate and throttle body bore, causing less airflow while the throttle plate is closed. Over time, the computer compensates for the reduced airflow with fuel trim adaptive logic adjustments, as it becomes more difficult for the computer to control the idle, especially when coming to a stop or when the throttle is “snapped”. Do NOT replace the throttle body before the throttle plates are cleaned for any condition related to fuel trim values.
THROTTLE BODY CLEANING PROCEDURE:
WARNING: Make sure the application straw is securely attached to the throttle plate cleaner nozzle. Failure to do so may result in a straw that has come off and is now stuck in the intake manifold assembly.
- Remove the intake duct hose that is connected to the throttle body.
- Using throttle plate or equivalent , cleaner open the throttle to the Wide-Open-Throttle (WOT) position. Clean out the throttle body bore and throttle plate using a small soft metallic (brass) or stiff bristled brush as necessary.
- After the cleaning is complete, reinstall air intake duct hose. Be sure all throttle cables are routed correctly then, start the engine. The engine will run rough until all the throttle plate cleaner is burned off from the internal vacuum circuits. Shut engine off.
- Remove the ECM memory fuse for 10 seconds and then re-install. This will reset the fuel trim adaptive values. Not all models use the scan tool to clear the adaptive fuel trim values.
Note: Removing the ECU memory fuse will not affect the loss of voltage to other control modules requiring the windows to be initialized, ETS, sunroof, overhead displays, radio station presets.
ECM Memory fuses are as follows:
| Model/MY | ECM Memory Fuses |
|---|---|
| 2001~2005 Rio | 10 Amp Underhood ECU Fuse |
| 1998~2004 Sephia/Spectra (1.8L Engine) | 10 Amp Underhood ECU 2 Fuse |
| 2004~2005 Spectra (2.0L Engine) | 30 Amp Underhood ECU 2 Fuse |
| 2001~05 Optima | 10 Amp Underhood ECU Fuse |
| 2004~05 Amanti | 10 Amp Underhood ECU Fuse |
| 2002~05 Sedona | 10 Amp Underhood Powertrain Fuse |
| 2003~05 Sorento | 10 Amp Underhood Powertrain Fuse |
| 2005 Sportage | 30 Amp Underhood ECM Fuse |
- Road test the vehicle approximately 2-3 miles before returning the vehicle to the Customer.
PART NUMBER INFORMATION:
| Description | P/N |
| Throttle Plate Cleaner | UM040-CH010 |
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- Deep Cleans GDI (Gasoline Direct Injection) / PFI (Port Fuel Injection) Intake Valves, As Well As, The Throttle Body, Intake Ports, Fuel Injectors and Combustion Chambers
- Helps Restore Fuel Economy and Maximize Horse Power
- Removing Carbon and Fuel Deposits From Gasoline Engines Intake Valves, Intake Ports and Turbos Is Essential to Ensuring Optimal Vehicle Performance.
- Made with Carbon Clear and Trade, the Most Advanced P.E.A. Cleaning Agent Available
- Strong Enough to Cut Through Thick Carbon Deposits, Even at Extreme Engine Temperatures
- GDI Induction cleaner Air system
- EGR cleaner
- Valves cleaner
- intake manifold cleaner
- Formulated for Use In All Fuel-Injected Gasoline Engines, Including GDI
- Contains Polyetheramine (“PEA”) to Dissolve Carbon Buildup in Combustion Chambers
- Cleans ALL Types of Intake Valves, Including Those Found in PFI, TBI, and GDI Engines
- Safe On Catalytic Converters and Oxygen Sensors
- Not For Use In Diesel Engines
- 【 Maintain Engine Performance 】 Perfect for air intake system, combustion chamber, EGR Valves, intake valves and oxygen sensors. Easy operation for making the fuel injectors spray smoothly and properly.
- 【 Easy to Use 】 Simply fill with air intake cleaning liquids and connect the vacuum hose of vehicle vacuum system. Reduce carbon deposits easily.
- 【 Multiple Applications 】 Use to clean the intake valve, combustion chamber, vacuum system and test the vacuum system pressure. Provides more thorough cleaning than other methods. Effectively remove engine carbon deposits and increase gas mileage performance.
- 【 Equipped with Negative Pressure Gauge 】 The liquid-filled gauge for accurate vacuum pressure reading and monitoring chemical flow.
- 【 Gasoline Engine / Petrol Cars Use 】 Used for gasoline engine injection and petrol cars. "NOT" for diesel injector. And solution liquid is "NOT" included.
- Restores MPG
- Restores engine performance
- Restores power
- Reduces harmful emissions
- Requires pressurized tool
- Cleans intake system by dissolving carbon and oil deposits
- Helps eliminate rough idle, hard starting, loss of power and pinging
- Smoke free, catalytic converter and O2 sensor safe formula
- Recommended for fuel injected engines, critical for direct injected engines
- Easy to use aerosol application, Includes vacuum Hose and multi-adapter fitting
Last update on 2024-04-02 / Affiliate links / Images from Amazon Product Advertising API
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