Exhaust Air Supply Tube Replacement at your home or office.

Our certified mechanics come to you · Backed by our 12-month, 12,000-mile warranty · Get a fair and transparent estimate upfront


Exhaust Air Supply Tube Replacement Service

What is the Exhaust Air Supply Tube all about?

Over the past several decades, vehicle manufacturers have been pressured to improve the emissions expelled from their cars. The process of minimizing the amount of pollutants that are expelled through the exhaust includes oxidizing the unburned fuel or partially-burned fuel carried in the exhaust gases. This started in 1966 when car manufacturers began introducing fresh air into the exhaust gas at a point very close to the engine. The temperature is extremely hot at this point and the combustion is completed before the exhaust exits the tailpipe.

Introducing the fresh air into the exhaust is done by way of an exhaust air supply tube, which connects to the exhaust pipe near or on the exhaust manifold. The same system is still used by many auto manufacturers for exhaust systems equipped with catalytic converters to combust the unburned fuel. The catalytic converter needs to operate at extremely hot temperatures, and air introduced into the exhaust gas near the engine increases the exhaust temperature to warm the catalytic converter to its operating temperature.

If the exhaust air supply tube is broken, leaking, or blocked, the engine will produce excess pollutants, run at incorrect temperatures, cause the oxygen sensors in the exhaust to read incorrectly, and consume excessive amounts of fuel as the sensors try to compensate.

Keep in mind:

  • Exhaust gases are extremely hot, so always allow sufficient time to cool before touching exhaust parts.
  • The exhaust air supply tube is part of the emissions system on your vehicle, and is required to be operational or intact in many jurisdictions.

How it's done:

  • The vehicle is supported on jack stands
  • The defective exhaust air supply tube is removed
  • The new exhaust air supply tube is installed
  • The vehicle is removed from the jack stands
  • The vehicle is road tested to check exhaust system

Our recommendation:

The exhaust air supply tube is exposed to high temperatures, and can burn through if a problem exists. If the exhaust air supply tube is broken, blocked, or leaking, it should be replaced by one of our expert mechanics. It is prudent to replace the air supply tube as well, if the EGR valve is being serviced.

What common symptoms indicate you may need to replace the Exhaust Air Supply Tube?

  • Exhaust under the hood is noisy
  • Noticeable fuel smell from the exhaust

How important is this service?

Since many states require smog testing on a regular basis, you can be cited if your vehicle isn’t running efficiently. Excess fuel consumption can eventually cause internal engine damage. Replace the exhaust air supply tube as soon as the need arises.

Fast and easy Exhaust Air Supply Tube Replacement service at your home or office.


Recent articles & questions

How Does a Transmission Filter Work?
The The transmission plays a hugely important role in how your vehicle functions. It's connected to the rear portion of your engine and transfers power from the engine to the wheels. Without a transmission, a vehicle simply cannot move. The...
How to Prepare for the Vermont Driver’s Written Test
If If you are getting ready to obtain your license in Vermont, you will first need to pass your driver’s written test so you can get your learner’s permit. Many people worry about the written exam and believe it will...
P2289 OBD-II Trouble Code: Injector Control Press Too High-Engine Off
P2289 P2289 code definition Injector Control Press Too High-Engine Off What the P2289 code means P2289 is an OBD-II code for the engine control module (ECM) detecting the injector control pressure (ICP) sensor is registering a fuel pressure that is...

My dash board lights have been flashing on and off then my car turned off.

It sounds like you might be having an issue with your ignition switch. The ignition switch is responsible for sending power to different electronics depending on the position of the key. This fault appears to be intermittent because the vehicle...

Fuel gauge and temperature gauge not working.

The fuel gauge not reading properly may be likely related to your fuel sending unit (https://www.yourmechanic.com/services/fuel-gauge-sender-replacement) or the gauge in the dash itself. The sending unit is a small float type component inside your fuel tank that measures the level...

Why would there be 4 warning signs appearing in my 2010 hybrid

Hello. I would need to know the model of the vehicle to be able to give a better diagnosis as to what is going on. If you have warning lights that came on all of a sudden then the computer...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com