How to Clean a Throttle Body

Disconnect the air duct

• Disconnect the air duct from the throttle body. Some air ducts may be also need to be disconnected from the air box for easier access.
• Disconnect electrical connectors or vacuum lines. If needed, mark each vacuum line and connector you remove so you remember where they go.

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Apply the throttle body cleaner

• Locate the throttle cables and manually rotate the throttle plate open.
• Spray throttle body cleaner liberally around the inside of the throttle body.

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Clean off the solvent

• Wipe off the throttle body with a shop rag.
• Shooting compressed air into the throttle body helps force the solvent to evaporate.
• Reinstall the ductwork and attach the vacuum lines and electrical connectors.

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FAQs

What happens when a throttle body goes bad?

Reduced engine power, rough idling, and poor acceleration are indications of a dirty throttle body. If your throttle body is really dirty, it can cease to function properly, leading to a non-responsive throttle or, worse, a stuck throttle.

Can you still drive with a bad throttle body?

While the engine may still function, it’s a bad idea to continue driving your vehicle with a dirty, gummed-up or damaged throttle body. Besides a probable reduction in power, lower fuel economy and possible harm to your engine, it may compromise the safety of you and your passengers.

How much does It cost to replace a throttle body?

You can expect to pay between $500 to $800 to have a throttle body replaced in your vehicle. It’s not a big job, but at an average of $150 per hour, labor charges add up quickly.