How to Replace an Exhaust Gas Recirculation (EGR) Control Solenoid

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High internal engine temperatures lead to the formation of oxides of nitrogen (NOx) that are smog forming pollutants. The exhaust gas recirculation (EGR) system is used to lower combustion temperatures and reduce NOx emissions. This is accomplished by reintroducing exhaust gases into the engine via an EGR valve.

Some EGR valves are vacuum controlled, some are completely electronic and some are a combination of the two. The hybrid systems often use a remote-mounted EGR control solenoid which is used to apply vacuum to the EGR valve itself. The solenoid is directly controlled by the powertrain control module (PCM).

The typical symptoms of a failed EGR control solenoid include stalling, surging, rough idle, increased emissions, and an illuminated check engine light.

Part 1 of 3: Locate the EGR control solenoid

In order to safely and efficiently replace your EGR control solenoid, you will need a couple of basic tools:

Materials Needed

  • Free repair manuals Autozone
  • Protective gloves
  • Repair manuals (optional) Chilton
  • Safety glasses

locating the EGR control solenoid (all other component references and number can be removed

Step 1: Locate the EGR control solenoid. The check valve is generally found mounted to the intake manifold or firewall.

Part 2 of 3: Remove the EGR control valve

disconnect the negative battery cable

Step 1: Disconnect the negative battery cable. Disconnect the negative battery cable and set it aside.

disconnecting the hose

Step 2: Disconnect the solenoid vacuum hoses. Disconnect the vacuum hoses by carefully sliding them off the connections.

Removing the electrical connector

Step 3: Remove the electrical connector. Remove the electrical connector by pushing down on the tab and sliding it off.

removing the fastener

Step 4: Remove the retaining fastener. Remove the solenoid retaining fastener using a ratchet or wrench.

removing the solenoid

Step 5: Remove the solenoid. Remove the old EGR control solenoid and keep it aside.

Part 3 of 3: Install the air injection check valve

Installing the new solenoid

Step 1: Mount the new solenoid. Mount the new solenoid in position.

tightening down the fasteners

Step 2: Install the fasteners. Reinstall the fasteners and tighten them until they are snug.

reinstalling the electrical connector

Step 3: Reinstall the electrical connector. Put the electrical connector back on.

reinstalling the hose

Step 4: Reinstall the vacuum hoses. Put back the vacuum hoses that you had removed earlier.

reconnect the negative battery cable

Step 5: Reconnect the negative battery cable. Reconnect the negative battery cable and tighten it down.

That’s it - you now have a new EGR control solenoid! If you’d prefer to leave this task to the professionals, YourMechanic offers an expert EGR control solenoid replacement service that you can rely on.


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Recent EGR Control Solenoid Replacement reviews

Excellent Rating


YourMechanic EGR Control Solenoid Replacement Service

Average Rating

4.5/5

Number of Reviews

14

Rating Summary
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Brandon

17 years of experience
318 reviews
Brandon
17 years of experience
Mercury Mountaineer - EGR Control Solenoid - Durham, North Carolina
Brandon goes above and beyond. Because of his skill and the great service at YourMechanic, I have referred my sister in Fl. and my daughter in Atlanta to YourMechanic.
Ford F-150 - Car is not starting - New Hill, North Carolina
This mechanic really is the best!!! He took time to explain the codes and problems with my truck! I appreciate such professionalism and integrity in this mechanic and request him to make repairs!

James

25 years of experience
32 reviews
James
25 years of experience
Nissan 200SX - EGR Control Solenoid - North Las Vegas, Nevada
Very Friendly and honest about the work he does. Would highly reccomend!

Noe

35 years of experience
604 reviews
Noe
35 years of experience
Ford Explorer - EGR Control Solenoid - Seattle, Washington
Noe was able to explain to me with ease, even though mechanics under the hood is still foreign to me, what was wrong and how he fixed it. I will definitely be booking him for future appointments THANK YOU NOE!!!

Jamahl

19 years of experience
830 reviews
Jamahl
19 years of experience
Mercury Sable - EGR Control Solenoid - Winter Garden, Florida
He is dependable, courteous and a real professional.

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