Skip the auto shop - Our mechanics make house calls

How Long Does an EGR Vacuum Modulator Last?

EGR Vacuum Modulator

Not only does the EGR (exhaust gas recirculation) system in your vehicle cut down on emissions, but it also helps to make your engine run more efficiently. However, in order for this to be true, every single component in the system has to be in top working order. A lot can go wrong with the system, especially since the parts are exposed to such extremely high temperatures. Manufacturers state that the majority of the parts are meant to last the lifetime of your vehicle, but this isn’t always the case.

The EGR vacuum modulator plays its own role in the EGR system, and just like all the other components and parts this part must be kept in good working order. The way this part works is that when your engine vacuum is idling, the EGR vacuum modulator closes. It is essentially a diaphragm. Once the vacuum increases, that diaphragm opens up. Should this part become broken, stuck, or even leak, then a variety of things can start to go wrong.

While there is no set amount of miles that it is meant to last, the EGR vacuum modulator does feature a filter so it will need replacing at some point. Here are some signs to watch for that could mean it’s time to replace the EGR vacuum modulator.

  • The engine seems to idle rough, unlike how it used to be. This could be because the EGR vacuum modulator is broken, or maybe it's leaking, or blocked. Either way YourMechanic can take a look and determine if it has reached the end of its lifespan.

  • There is a good chance your Check Engine light will come on. As soon as this light comes on, it's important to have it checked out by the professionals so they can read the computer codes.

  • Another sign is a knocking sound coming from the engine when you idle. Again this could signal the end of the road for your EGR vacuum modulator.

The EGR vacuum modulator is one of many parts involved in the EGR system of your vehicle. Without it working properly your engine will suffer. While there is no set amount of miles it is meant to last, at some point it will need replacing. If you’re experiencing any of the above mentioned symptoms and suspect your EGR vacuum modulator is in need of replacement, get a diagnostic or book an EGR vacuum modulator replacement service with a certified mechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: Vacuum hose to the charcoal cannister has broken

Hello. If you have broken the vacuum port off of the charcoal canister, then it may have to be replaced. In some instances, the broken piece can be reattached. However, it will only function properly is a vacuum tight seal...

Q: 2500 RPM idle on cold start. Is this normal? If not, then is it due to a cold start injector?

A higher than normal idle can be due to a stuck open idle control valve or a vacuum leak in the intake when the engine is cold. You may have a bad cold start injector system. I would recommend having...

Q: Sometimes at very low speeds the brake pedal becomes hard and cannot be pressed.

It seems that your brake booster is not working well at low speeds. In this case, when the engine is not able to provide proper vacuum, the brake pedal gets hard. Try to press the brake pedal when the engine...