Egr Vacuum Solenoid Replacement Cost in 2024.

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What is an EGR vacuum solenoid and how does it work?

The exhaust gas recirculation, or “EGR", system on your vehicle serves to reduce engine emissions by introducing or “recirculating” a small amount of exhaust gas from the exhaust system back to the engine intake. This helps to burn away any fuel that was not completely burnt during the combustion process. It also reduces the level of oxygen that enters the engine cylinders, thereby reducing combustion temperatures and reducing harmful nitrogen oxide. The result is a more efficient engine with fewer hydrocarbon emissions.

The EGR vacuum solenoid is an electronically controlled vacuum valve that distributes engine vacuum to the EGR valve when called upon by the vehicle’s computer, the engine control module (or ECM).


How is a an EGR Vacuum Solenoid Replacement done?

The EGR vacuum solenoid can be located either on the engine, near the engine, or on the firewall behind the engine. Therefore, a technician will likely remove the upper engine cover for access. Other wires, hoses, or components might need to be moved as well. It is common to disconnect the negative cable on the battery, taking care to preserve the vehicle computer memory. From there, the technician will disconnect the vacuum lines connected to the solenoid and unplug the electrical wire connector. The solenoid is removed from the vehicle by unfastening the retaining screw, bolt, or clip.

Once the new EGR vacuum solenoid has been secured in place, the electrical plug and vacuum lines are reconnected. All other components that were moved or removed for access are put back into place and the solenoid is tested for proper operation. The technician might need to clear the diagnostic code from the ECM using a scan tool. Your vehicle will likely be road tested as well.

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National average cost of a an EGR Vacuum Solenoid Replacement
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How do I know if my vehicle needs a new EGR vacuum solenoid?

In some cases, you might not immediately notice signs of a bad EGR vacuum solenoid. Symptoms can vary depending on whether the solenoid fails to open properly or close properly. If your EGR vacuum solenoid fails, you might notice the following signs:

Your engine runs roughly, hesitates, or stalls upon acceleration

You hear the engine knocking or “pinging”, a sign of pre-ignition

The check engine light comes on

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Other questions customers ask

Is an EGR valve the same as an EGR vacuum solenoid?
No, the EGR vacuum solenoid is an electronically-operated valve that distributes vacuum from the engine to the EGR valve whenever the vehicle computer, the engine control module (ECM) commands it. The two devices work in tandem to reduce combustion temperatures and harmful emissions.
Can I drive with a bad EGR vacuum solenoid?
If the EGR vacuum solenoid is not working properly, you might notice little difference to the drivability of your vehicle. On the other hand, you might find that your engine runs roughly, hesitates, stalls, misfires, and more. Your vehicle might not pass an emissions test. At the very least, driving with this condition leads to increased levels of hydrocarbons emitted from the exhaust.
What damage can a faulty EGR valve cause?
A bad EGR valve can lead to drivability issues, such as engine knock (pinging), misfire, stalling, and more. Over an extended period of time, internal engine damage can occur. Therefore, this problem should be checked out by a trained technician.

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