BMW 540i EGR Vacuum Modulator Replacement at your home or office.

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EGR Vacuum Modulator Replacement Service

How much does a EGR Vacuum Modulator Replacement cost?

On average, the cost for a BMW 540i EGR Vacuum Modulator Replacement is $191 with $96 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2003 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$307.41Shop/Dealer Price$373.02 - $530.46
1995 BMW 540iV8-4.0LService typeEGR Vacuum Modulator ReplacementEstimate$287.41Shop/Dealer Price$353.05 - $510.51
1997 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$287.41Shop/Dealer Price$353.05 - $510.51
2001 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$287.41Shop/Dealer Price$353.01 - $510.44
2002 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$287.41Shop/Dealer Price$353.07 - $510.56
2000 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$287.41Shop/Dealer Price$353.05 - $510.51
1999 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$292.41Shop/Dealer Price$357.81 - $515.09
1998 BMW 540iV8-4.4LService typeEGR Vacuum Modulator ReplacementEstimate$292.41Shop/Dealer Price$358.46 - $516.23
Show example BMW 540i EGR Vacuum Modulator Replacement prices

What is the EGR Vacuum Modulator all about?

Your vehicle’s exhaust gas recirculation (EGR) system is used to reduce your engine’s emissions by lowering the combustion chamber temperature. This produces less nitrous oxides, and burns pollutants contained in the exhaust gas that are reintroduced into the intake manifold. If the EGR valve opens and allows exhaust gases into the intake, the engine runs more smoothly and efficiently. However, this is not the case at idle, when the engine needs the most vacuum for proper operation.

If the EGR valve opens at idle, you can experience a rough idle and possibly a knock. Engine power is negatively affected at low RPM’s. Engineers implemented a control that closes the EGR valve when the engine is running at lower RPM’s. The engine produces lower vacuum at lower engine speeds, so it’s natural that the control is modulated by the engine’s own vacuum. The EGR vacuum modulator is a diaphragm that closes when the engine vacuum drops to idle, and opens as soon as the vacuum increases. It’s also known as a vacuum modulated valve. If the EGR vacuum modulator is leaking vacuum, is blocked internally, or is leaking, the Check Engine light will come on and the engine may start to knock.

Keep in mind:

  • The EGR system assists in reducing engine emissions. An improperly operating EGR system can cause a smog test failure.
    • Vacuum hoses become brittle over time. Take precautions to not damage the vacuum hoses when working on the EGR system.

How it's done:

  • The EGR vacuum modulator is verified that it needs to be replaced. The engine top trim cover is removed to access the modulator.

  • The defective EGR vacuum modulator is removed from the bracket near the EGR valve and is disconnected.

  • The new EGR vacuum modulator is installed and reconnected.

  • The engine is started and the EGR vacuum modulator is tested for computer codes and operation.

  • The vehicle is road tested to ensure proper operation of the EGR vacuum modulator.

Our recommendation:

The EGR vacuum modulator does not have a replacement interval. It will likely need replacement at some time because it does contain a filter. It can be inspected any time a vacuum test needs to be performed on the engine vacuum. If the EGR vacuum modulator is deemed to be faulty, you will need to have it replaced by one of our expert technicians.

What common symptoms indicate you may need to replace the EGR Vacuum Modulator?

  • Check Engine light is on
  • Engine knock at idle
  • Engine idles rough

How important is this service?

The EGR system partly controls your vehicle’s emissions, and a faulty EGR vacuum modulator can cause your car to fail a smog test. In addition, your vehicle may not idle, or may knock at idle. It is recommended to replace a faulty EGR vacuum modulator as soon as possible.

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Rating Summary
57
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Tom

42 years of experience
205 reviews
Tom
42 years of experience
BMW 540i V8-4.4L - Window Motor / Regulator Assembly Replacement (Driver Side Front) - Campbell, California
Yourmechanic.com is awesome! It was so simple to get on their website, tell me exactly what I needed done and get an instant quote. I got an excellent price, the mechanic Tom came to my home on time, was very friendly and fixed the window on my BMW. Tom is the best! I will ABSOLUTELY use them again and refer them to everybody I know. I am a very satisfied customer!

Kyle

22 years of experience
55 reviews
Kyle
22 years of experience
BMW 540i V8-4.4L - Engine is sputtering - Suwanee, Georgia
A pleasure to work with...

Joseph

27 years of experience
578 reviews
Joseph
27 years of experience
BMW 540i V8-4.4L - Car is running hotter than normal - Missouri City, Texas
Very professional..and courteous..was even here before appt.time..thank u Joseph..took care of my problem !!

Jonathan

17 years of experience
138 reviews
Jonathan
17 years of experience
BMW 540i V8-4.4L - Oil or Fluid is leaking - Tempe, Arizona
Jonathan was just AWESOME on the service (oil change) he did on my BMW. I am truly impressed. Any other service that I would need with my bimmer, I am gonna ask for him. After the oil change, my car had a oil leak and I got my Brake light and Check Brake fluid light. At first I thought it was due to oil change. Later Jonathan came back again the next day and identified the it was brake oil leak. He got the place of leak within few minutes, which no other mechanic could do. This guy knows so much about German cars. Glad to have got him work on my car.

Excellent Rating

(61)

Rating Summary
57
3
0
0
1
57
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1
Number of BMW 540i services completed
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services done by our mechanics
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