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EGR (Exhaust Gas Recirculation)

Related articles

How to Replace an Exhaust Gas Recirculation (EGR) Control Solenoid
Exhaust gas recirculation (EGR) systems are controlled by the EGR control solenoid, which is controlled by the powertrain control module (PCM).
How to Replace an Exhaust Gas Recirculation (EGR) Pressure Feedback Sensor
Exhaust gas recirculation (EGR) systems use a pressure feedback sensor to tell the powertrain control module (PCM) how much exhaust gas is flowing.
How to Replace an Exhaust Gas Recirculation (EGR) Valve
The exhaust gas recirculation (EGR) valve can cause drivability problems if it fails and should be replaced to avoid engine performance issues.
Symptoms of a Bad or Failing EGR Vacuum Modulator
Common signs include engine performance issues, the Check Engine Light coming on, and failing an emissions test.
Symptoms of a Bad or Failing EGR Cooler
Common signs include engine overheating, exhaust leaking, and the Check Engine Light coming on.
How Long Does an EGR Cooler Last?
Within your vehicle is a part called the EGR cooler. EGR stands for Exhaust Gas Recirculation. This cooler is responsible for taking care of the exhaust gases once they leave the engine....
How Long Does an EVP Shut Off Solenoid Last?
The EVP shut off solenoid is the EGR (exhaust gas recirculation) valve position sensor. With that said, it has a fairly important job to perform that will help ensure your...
How Long Does an EVP Position Sensor Last?
An integral part of your vehicle's EGR (exhaust gas recirculation) system is the EVP position sensor. This sensor has the important job of figuring out where the gate is positioned in...
How to Replace an Exhaust Gas Recirculation (EGR) Vacuum Modulator
The EGR vacuum modulator meters the EGR valve in some car systems. Some signs of a failing EGR vacuum modulator include stalling and a rough idle.
How Long Does an Exhaust Pressure Control Valve Last?
The exhaust pressure control valve is used in diesel vehicles as part of its EGR (exhaust gas recirculation) system. The EGR system is meant to bring down the amount of...
How to Clean an EGR Valve
The EGR valve is the heart of the emissions system on an engine. EGR is an acronym for Exhaust Gas Recirculation, and that is exactly what it does. This wonderful...
How to Replace an EVP Shut Off Solenoid
An EGR valve is essential to the EGR system in your vehicle. For this valve to work, the EVP shut off solenoid must monitor its position and function.
How to Replace an EVP Position Sensor
The EGR valve is monitored by a valve position sensor. This sensor helps your car's EGR system to run more efficiently and better control emissions.
How to Replace an Exhaust Gas Recirculation (EGR) Tube
The EGR valve is connected to an EGR pipe, which helps distribute molecules through your vehicle’s EGR system. A bad pipe leads to performance issues.
How to Replace an Exhaust Gas Recirculation (EGR) Cooler
Exhaust gas recirculation (EGR) coolers lower the temperature of the exhaust gas before it enters the car engine. EGR coolers are mainly for diesel.
How to Replace an Exhaust Gas Recirculation (EGR) Temperature Sensor
Exhaust gas recirculation (EGR) temperature sensors monitor the EGR cooler's operation. One is on the exhaust manifold and one is near the EGR valve.
How to Buy a Good Quality Exhaust Gas Recirculation (EGR) Tube
Exhaust gas recirculation tubes (EGR tubes) are responsible for moving a very small amount of gas from the exhaust manifold to the intake manifold in order to help reduce emissions of nitrous...
How to Buy a Good Quality Exhaust Gas Recirculation (EGR) Valve
The exhaust gas recirculation valve (EGR valve) serves to dramatically reduce the emissions that are key contributors to pollution in the air. While EGR systems were not routinely added to engines until...

Related questions

Question
I have an intermittent misfire - 2002 Pontiac Grand Prix
Hi and thanks for contacting YourMechanic. The EGR can cause a misfire if it is stuck open when the engine is cold or running at a lower speed. The EGR replaces some of the air with burnt fuel to help...
Question
EGR GAS RECIRCULATION SYSTEM VALVE 2
The color (black) is just a consequence of "carbon particles" that are normally present in the exhaust flow through the valve. We would need the exact Diagnostic Trouble Code ("DTC" as displayed on the Code Scanner) in order to advise...
Question
Diagnostics show the EGR and idle air control valve - what does this mean?
The idle air control valve is a unit that monitors the air intake into the engine as it is mixed with fuel prior to entering the motor. When this is not working properly, this will cause an imbalance in the...
Question
service engine light w/ wrench is on--EGR valve
Hi there - this is a relatively simple repair. The EGR valve is attached to the engine with 2 bolts, and is located on the top of the engine near the driver-side end. It is close to the air cleaner...
Question
My 2010 Ford Escape vibrates a lot. There are no leaks at all. What could be the cause?
If the vibration happens when you're stopped at a red light, then it's more than likely caused by a vacuum leak, or fuel or ignition system component failure. Typically, the first three parts that would be inspected are the idle...
Question
My car has idling problems that come and go
The biggest problem with inconsistent engine idle issues is trying to diagnose them. However, there are a few other components you haven't listed that might be faulty. The first is the throttle position sensor. It's likely your Mitsubishi has an...
Question
EGR valve is open when cold and closed when engine hot
Hi there. Usually this situation is caused by an EGR valve that is dirty and needs to be cleaned. This component recirculates unburned fuel particles (carbon) from the exhaust and back into the intake manifold to be burned a second...
Question
I accidentally drove through 2 feet of water, I have replaced several parts but the car still runs poorly
You did not mention replacing the air filter after it got wet. The engine and its sensors were not designed to go through water and will get damaged. You may have also damaged internal engine parts like bending engine piston...
Question
I replaced the IAC and EGRVCS - the idle eventually worsens and dies
Hi there. You will need to check the mass air flow (MAF) sensor for if it is plugged in and dirty. If there is nothing wrong with the MAF, I recommend replacing it for the symptoms that you are encountering...
Question
Clogged manifold intake runner bank 1 2005 Mercedes C230 Turbo
Hi - the clogged intake is a long-term "carbon clogging" from the turbocharger/EGR valve operation. The manifold must be removed, disassembled, cleaned and reinstalled. Tedious, and requires moderate DIYr skills. Unfortunately, this is not a service YourMechanic offers at this...
Question
My car will occasionally not start
A situation where the car does not always start can be caused by one of several mechanical issues, ranging from fuel delivery problems to ignition system components like the ignition coil or distributor. However, on vehicles more than 10 years...
Question
My truck runs for a few seconds then dies
When you have low fuel pressure but recently replaced the fuel pump and relay, the issue is typically vacuum-related or caused by a clogged or worn out fuel injector. The vacuum issue may be related the the EGR valve or...
Question
I just replaced my egr valve and notice while driving for a couple of minutes my Electronic throttle Control light starts flashing
Hello. There are several components that can effect the electronic throttle control system. The issue may pertain to the recent work done, or may be a separate issue all together. The system depends on sensor inputs from all over the...
Question
No power idles like it has a cam. I tested it with a Innova OBD 2 scanner.
The EGR valve may be getting carbon into the valve holding it open. This would cause the rough idle and low power. If the engine is getting excessive carbon in the motor the intake manifold and exhaust manifold may be...
Question
Rough idle and stalling with exhaust popping
The first thing to do is to get rid of the oil type air filter. This oil bath type filter can cause the mass air flow to be contaminated with the oil from the filter you are using. You should...
Question
Car is running crappy sounds like a v8 truck with dual exaust.
If the engine exhaust sounds very loud, there may be a loose or broken component like a cracked manifold or rusted pipe section like on your egr valve. A technician will be able to look over the vehicle listening for...
Question
Check engine light came while driving. Is this a serious problem? car seems to be running fine. 2004 Hyundai SantaFe
Hello - the Enhaust Gas Recirculation - EGR - system reduces emissions by recirculating exhaust gases that are not completely burned back through the engine. This is done in a timed manner under certain conditions. If this system is not...
Question
Service engine light on...car hesitates/stalls after stop
The EGR valve is a small component designed to allow the flow of exhaust gases into the intake manifold in controlled amounts. As such, it's a simple valve that closes and opens as needed. The EGR valve has one single...
Question
EGR valve is closed when I accelerate and it opens when I remove my foot from accelerator. What is wrong with the EGR valve?
Hi there. If you are getting the EGR valve to operate in the opposite times, then check the harness for power and see if the power is on with the engine at idle. Check the voltage and there should be...

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