How Long Does an EGR Vacuum Modulator Last?

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.


Next Step

Schedule EGR Vacuum Modulator Replacement

The most popular service booked by readers of this article is EGR Vacuum Modulator Replacement. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

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

Recent EGR Vacuum Modulator Replacement reviews

Excellent Rating

(171,627)

Rating Summary
161,099
5,644
1,174
834
2,876
161,099
5,644
1,174
834
2,876

Chris

22 years of experience
2223 reviews
Chris
22 years of experience
Nissan Altima L4-2.5L - Car is not starting - Perris, California
Experienced mechanic and on time. Follow up right away about what is wrong to your car
Chevrolet Blazer - Brake Rotor/Disc Replacement (Front) - Huntington Beach, California
I was thrilled to find this service. I had been putting off doing my brakes. When I came across yourmechanic.com at first I was skeptical but when Chris showed up, a half an hour early, I was sold. He took care of my brakes in a pretty precarious parking spot and finished the job in record time. I was impressed. I could not be more thankful for your service. So many buissness have lost sight of personal service, yourmechanic.com truly caters to the clients needs, old school. I have been telling friends about my experience. I myself will be using the service from here on out. I really like that I could ask for help in diagnosing issues and get a quote right away and suggestions for further service. Thank you yourmechanic.com, thank you Chris. Now a believer Angela H

Charles

17 years of experience
176 reviews
Charles
17 years of experience
Subaru Legacy H4-2.5L - Battery - Menlo Park, California
Great service! Timely and done exactly as described. Will be using again!
Toyota Camry - Battery - Hyattsville, Maryland
Charles, was precise and assertive as well as patient. Great service. would highly recommend again.

James

19 years of experience
96 reviews
James
19 years of experience
Chrysler 200 V6-3.6L - Car is not starting - Anthem, Arizona
On time, got the bug fixed and no hassle. Thank you.!!!

Scott

34 years of experience
546 reviews
Scott
34 years of experience
Jeep Cherokee L6-4.0L - Brake Pads Replacement (Front) - Broomfield, Colorado
Scott was on time, professional and friendly.

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

Related articles

How to Replace a Coolant Vacuum Valve Switch
A vacuum line attaches to the vacuum switch in your car as part of the engine’s heating and cooling system. A faulty switch can break your heater.
How to Replace a Vacuum Hose
A vacuum hose is failing if the Check Engine Light comes on, the engine does not run smoothly, or the engine loses power and does not start.
How to Replace a Cruise Control Vacuum Reservoir
The cruise control system has a failing vacuum reservoir if the cruise control does not hold speed or you hear a hissing noise coming from the car.

Related questions

Codes showing: P0171, P0420, P0174
Hello. These diagnostic trouble codes are an indication that there could be a problem with the oxygen sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-oxygen-sensor) or that there is a vacuum leak (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-vacuum-hose-s). It is possible that the vacuum leak is located in the intake manifold....
can cup hands over carburetor when its running and it will not stall
Hello and thank you for your question. Yes, you are right but only if you have completely shut off the air intake at that point. Not sure that cupping your hands will do it but surely you can be the...
Intake air flow leaking. What makes this happen?
Hi there. When having the code P0171 (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn), the fuel system is too lean. This could be the fuel pump is not working, the fuel filter is dirty or plugged, or the injectors are plugged or not working properly. Check...

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