Symptoms of a Bad or Failing Air Diverter Valve

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The emissions system of a car has many different parts that help to reduce the amount of pollution the car emits. The air diverter valve helps to put clean air into the system to push out pollutants, without letting the exhaust fumes out. This part works in conjunction with the air bypass valve and in most cases they will have to be replaced as a pair.

Many states have strict regulations regarding the emissions of the cars that are allowed to drive on their roadways. These strict regulations are just one of the reasons why keeping your car’s emission system in check is important. Having bad emission components can lead to your car letting off more harmful exhaust fumes. The last thing that you want is to be fined for emissions related issues due to neglecting to replace a bad air diverter valve.

1. Car is running rougher than usual

Among the most noticeable signs that the air diverter valve is damaged is your car running sluggishly. The air/fuel mixture of your car is very important in keeping it running smoothly. Having a bad air diverter valve will throw this mixture off and cause the car to run and idle rough. Not having the full power of your engine when operating your car can create a lot of danger when trying to navigate the roadways so it is recommended that a professional mechanic replaces the failing air diverter valve.

2. Gas mileage is suffering

One of the biggest expenses that most people have is the monthly gas bill for their car. Getting good gas mileage is an essential part of saving money, but nearly impossible when you have a broken air diverter valve. The broken valve will cause the fuel to mixed too lean, which in turn causes a lot of gas to be wasted.

3. Check Engine Light is on

Another very common sign that you will notice when there is a problem with the air diverter valve is the check engine light being on. The onboard computer system that is built into your car will be alerted of the issues with the air diverter valve and will turn the light on to warn you. Getting the light checked will give you the answers you need to get the appropriate repairs done.


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Bernie

50 years of experience
41 reviews
Bernie
50 years of experience
Honda Accord - Brake Pads Replacement (Rear) - Phoenixville, Pennsylvania
I specifically asked for Bernie to come back, since I was so pleased with the work he did on our other car. This time I got to meet Bernie personally. He is a kind family-man who exhibited the quiet confidence of someone you would expect with the 50 years of automotive experience that he has. I felt very comfortable giving him the key to my car. Two of my kids (ages two and four) came out to greet him, since they remembered him from his first visit. Bernie is great around kids and was very kind to my two-year old son who was trying to "help" Bernie do his job. Thanks again, Bernie!
Honda Odyssey - Brake Pads Replacement (Front, Rear) - Phoenixville, Pennsylvania
I was very pleased with Bernie's work, professionalism, and courteousness. Best brake job I have ever had, and I have had many done (and several done myself, but not on this vehicle). This was a maintenance appointment -- not a repair of something broken -- so I was surprised when the brakes felt so much better after Bernie did the work. You can really see the care he took with our vehicle when I examined everything after he was finished. Thanks, Bernie!

Daniel

9 years of experience
17 reviews
Daniel
9 years of experience
Hyundai Sonata - Brake Pads Replacement (Front, Rear) - Sacramento, California
Awesome customer service. On time and answered my questions with patience. Listened to my concerns and made helpful suggestions. Seemed very knowledgeable and experienced. I will be glad to request him again. Thank you!!

Breck

18 years of experience
532 reviews
Breck
18 years of experience
Toyota RAV4 - Brake Pads Replacement (Rear) - Conroe, Texas
Breck was awesome! He called ahead of time and asked if he could arrive early. He was friendly and easy to talk to. He made me feel comfortable with the service he was going to provide and explained things clearly to me. He smiled and made this experience a good one. I will absolutely be booking future appointments with Breck and I will recommend him and Your Mechanic services to others I know. Thank you!

Brian

19 years of experience
101 reviews
Brian
19 years of experience
BMW Z4 - Brake Pads Replacement (Rear) - Phoenix, Arizona
Brian knows what he is doing and I am so happy yourmechanic.com suggested him for my Z4 car inspection prior to purchasing and even happier he was available to perform my 1st service on the vehicle I purchased. His knowledge on the brand gave him ability to to an in depth inspection and he communicated very well informing me what to prepare for in ownership of my BMW. When he came to perform maintenance on my vehicle he shared so many tips with me. I will absolutely be having Brian come back out when I need future servicing on my car.

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