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Bad throttle body symptoms

The throttle body can get contaminated by the gases and fumes emitted by the engine. A contaminated throttle body can be recognized by a number of symptoms. In some cases, a bad throttle body is detected during an MOT inspection only. It’s good to know though how to recognise a bad throttle body. Look for among others, the following symptoms:

Drop in mileage;

Throttle stops;

Rough idling;

Grime buildup;

Poor engine performance;

Check engine light;

Increase in fuel consumption;

Hard shifting;

Poor or high idle;

Airflow disruptions;

Drop in acceleration.

Do you recognize any of these symptoms? Then it is advised to inspect the throttle body. If it turns out that it is contaminated, you can clean it with a throttle body cleaner or have it cleaned by your local garage. In many cases however cleaning is no longer possible and it needs to be replaced.

Replacing a throttle body

A heavily contaminated or bad throttle body needs to be replaced. You can have a throttle body replaced at your local garage, but to save costs its something you can do yourself as well. You can order a new throttle body quickly and easily using your number plate or by selecting the make, model and engine type of your car on Winparts UK.

Buying a new throttle body

You can buy a throttle quick and easily at Winparts. Enter your number plate or select your car make, model and type of engine, and the right car parts are shown. You can then choose from a number of top brands such as VDO, Bosch, Valeo and Pierburg. You can also find valves and regulators in our assortment at Winparts UK. The right place to look for EGR valves, electric bypass valves and for example pressure converters.

Throttle body

The throttle, also called throttle body is part of the air intake system. It controls the amount of air that flows to the engine. The engine needs air (oxygen) to function. You can find the throttle body between the air filter and the intake manifold and is generally connected to the air mass meter. The throttle is exposed to gas and fume from the engine. Over time, the body gets contaminated, causing poor performance of your car. Once this happens, it's time to have the body cleaned with a throttle body cleaner or have it replaced.

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Throttle body 408-238-321-004Z VDO

Supplementary Article/Info 2: Control Unit/Software must be trained/updated
Operating Mode: Electric
Supplementary Article/Supplementary Info: Without gasket / seal
Fuel Type: Petrol
Part number of recommended accessories: VW 047 133 073 C
Observe the vehicle manufacturer specifications
Guarantee: 2 years
Diameter [mm]: 44
Always compare old and new part (in particular OE No.)