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

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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Lucas

21 years of experience
885 reviews
Lucas
21 years of experience
Toyota Camry L4-2.2L - EGR Control Solenoid - Los Angeles, California
Lucas(once again) has just blown my mind with how well he fixes things. My car has never sounded better and driven smoother and i give ALL the credit to Lucas. If you're thinking about booking from yourmechanic,DO IT. And book Lucas!!!
Audi A5 Quattro - Brakes, Steering and Suspension System - Los Angeles, California
It was a simple brake pad inspection but he was on time, friendly, and efficient. Would request him again.

Theodore

16 years of experience
1587 reviews
Theodore
16 years of experience
Mazda Tribute V6-3.0L - Battery Cable Replacement (Positive, Negative) - Kirkland, Washington
Really good
Lexus IS250 - Oil Change - Bellevue, Washington
Great work

Brandon

18 years of experience
275 reviews
Brandon
18 years of experience
Jeep Grand Cherokee L6-4.0L - Window is not working - Lawrenceville, Georgia
REAL ON TIME FOR MONDAY MRNG REPAIR / WILL DEF USE HIM AGAIN !! HIGHLY RECOMEND
Dodge Durango - Idle Control Valve - Conyers, Georgia
On time, great service . Have used Brandon before and will definitely use again. Very quick, friendly.

Noe

36 years of experience
604 reviews
Noe
36 years of experience
Ford Explorer V6-4.0L - 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!!!

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