Tips on Buying a Throttle Body

Throttle body part

When you are looking to buy a throttle body to replace your old one it is important to match up the part numbers to be sure it’s the correct one for your car. Get it right the first time – You do not want to purchase the wrong one and then go though the process of finding the correct one all over again.

At Your Car Spares Ltd  – What we test and look for!!!!

The first thing we look for is an illuminated engine light on the dashboard. The engine light doesn’t   insinuate that the throttle body is faulty but it tells us that there is a problem around the engine that needs to be investigated. Next we look at the condition of the throttle body to ensure that the connections are intact and that it isn’t dirty or clogged because sometimes it may just need cleaning rather then replacing. Next we need to start the car because the throttle body concurrently works with the throttle pedal. If the throttle body is faulty then the car may stall when you try to pull away due to the throttle body’s flap not opening as much as you are used to when you depress the throttle pedal. Another thing to look out for is an irregular and bumpy acceleration , which can cause the overall performance of the car to be at a lower standard , as well as the car consuming more fuel than usual.

Where to find the Part Number

The part number is usually found on the bottom of the throttle body. You will have a manufacturer part number (MPN) and an original equipment manufacturer (OEM) part number.

Throttle parts serial number

Sample of where to view the parts number on a Throttle Body part


How does a Throttle Body work?

 The throttle body is responsible for putting air into the engine. The amount of air that is put into the engine is based on how much pressure is put on the throttle pedal and this information is picked up by various sensors. If you push the throttle pedal down then the butterfly valve on the throttle body will open and push air into the inlet manifold making the car quicker. As the engine needs to maintain a desired air to fuel ratio there are sensors on the engine that will dictate how much the valve will open or if the ECU needs to inject more fuel into the engine to ensure that this ratio is correct.

Side view

Top view of a throttle body part

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