Installing the EGR Valve
- Position the new valve against the pipe and thread the pipe's nut by hand, if yours comes equipped with it.
- Position a new gasket and start the valve's mounting bolts through the EGR and gasket by hand.
- Tighten the mounting bolts with the wrench — and the pipe, if equipped, with the adjustable wrench. ...
- Plug in the valve electrical connector, reattach vacuum hoses, and replace the air cleaner duct and any other components you had to remove to gain access to the valve.
- Connect the negative (black) battery terminal.
- Start the engine and check that the EGR valve is working correctly and there are no vacuum leaks.
How much does it cost to replace an EGR valve?
Replacement Cost. The cost to replace an EGR valve is anywhere from $180 to $460. The parts costs alone will be somewhere between $139 and $349. The labor costs alone will be between $50 and $120, depending on the mechanic’s hourly rate.
How to replace an EGR valve?
Removing the EGR Valve
- Make sure the engine is cool and disconnect the negative (black) battery terminal. ...
- Then, remove the engine cover or air cleaner duct, if necessary, to gain better access to the EGR valve. ...
- Disconnect the vacuum hose from the top of the valve by hand, depending on your model. ...
- Check the condition of each vacuum hose. ...
How do you fix an EGR valve?
- ECM remains in place
- Stop carbon build up
- Prevent future costly EGR problems
- Reduced oil contamination
- Reduced turbo lag
- Smoother uptake of power
Should I clean or replace EGR valve?
How To Clean an EGR Valve Without Removing It
- Gather the needed cleaning supplies. In order to clean your EGR valve, you will need to have a clean microfiber towel, an EGR valve cleaner, and latex gloves.
- Locate the EGR Valve. Different vehicles will have their EGR valve in different places. ...
- Gain access to the EGR Valve. ...
- Start the vehicle and rev it to 2000 RPMs. ...
Can I change EGR valve myself?
In most models, replacing an exhaust gas recirculation (EGR) valve is not difficult. You can do it in your garage in about an hour or two depending on your particular system, using some common tools and a good solvent like carburetor cleaner.
How long does it take to change an EGR valve?
Usually the replacement of the EGR valve is completed after 1 hour. For some older models, half an hour is sometimes sufficient. For tighter built models, the replacement can take 2-3 hours.
How much does it cost to replace EGR valve?
The average cost of replacing the EGR valve in your vehicle is anywhere from $250 to $350 on average, depending on your vehicle's year, make, and model as well as the type of system it has. The cost of parts will be somewhere around $190 to $270, while the cost of labor will be anywhere from $60 to $80.
What are the symptoms of a faulty EGR valve?
What are the symptoms of a failing EGR valve?Your engine has a rough idle. ... Your car has poor performance. ... You have increased fuel consumption. ... Your car frequently stalls when idling. ... You can smell fuel. ... Your engine management light stays on. ... Your car produces more emissions. ... You hear knocking noises coming from the engine.
Is it better to clean or replace EGR valve?
Proper maintenance of the valve is a must if you want to avoid any performance related issues on your car. If you notice a smell of fuel that comes out from under the hood or rough idling, then it might be time to replace the valve. In most cases, though, you do not need to toss it out just yet.
Where is the EGR located?
Answer: The purpose of the EGR valve is to recirculating engine exhaust gas to the back to the engine cylinders. To accomplish this task the EGR valve is attached to the intake manifold of the engine. This location is atop of the engine near the carburetor, usually towards the back of the engine near the firewall.
What causes EGR valve failure?
The failures are usually caused by a build-up of deposits in the EGR valve over a period of time that causes them to stick. This build-up is part of the ordinary operation of the vehicle and should be regarded as a serviceable item requiring repair or replacement.
Can car run without EGR?
It might affect the environment but it is not harmful to the engine. Some people are running for more than 50k km without EGR. The EGR is disabled in all remapping.
How do you remove a EGR valve?
1:2213:37How To Remove and Clean an EGR Valve - YouTubeYouTubeStart of suggested clipEnd of suggested clipItself just held in on to the intake manifold with four 10 millimeter bolts and then it's just aMoreItself just held in on to the intake manifold with four 10 millimeter bolts and then it's just a case of removing the egr cooler pipe.
Will a bad EGR valve cause a check engine light?
If the EGR valve fails, the computer will recognize the problem and turn on the check engine light. This part may seem a little pricey, but it's typically an easy fix and will ensure that your engine gets back to running the way it should.
How do you check if EGR valve is stuck open?
Symptoms of an EGR valve that is stuck open include rough unstable idle and stalling. Often a car stalls when stopping after exiting the highway. If the EGR system is clogged up, or the valve is stuck closed, the combustion temperature increases.
How do you clean an EGR valve without removing it?
0:061:42How To Clean A EGR Valve With Spray Without Removing It - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe air intake pipe that comes off the air box. Simply undo it take the can and then trade it in inMoreThe air intake pipe that comes off the air box. Simply undo it take the can and then trade it in in small intervals.
How long does it take to clean EGR?
This means in the majority of instances there is no requirement to remove the EGR for cleaning and assuming it's just clogged up / dirty this will resolve the issue. On completion of the job, which takes approximately 45-60 minutes, we'll reassess the engine management system and reset any fault codes.
How do you clean an EGR valve?
0:363:26How to Clean EGR Valve in Your Car (How It Works) - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd some of it goes into the EGR valve which when it's opened up sends a hot exhaust gas back intoMoreAnd some of it goes into the EGR valve which when it's opened up sends a hot exhaust gas back into the intake manifold. So that sends already burned gas into the engine. So the engine temperature is
What does EGR stand for?
Exhaust Gas RecirculationWithin modern internal combustion engines, Exhaust Gas Recirculation (EGR) is a method to control Nitrogen Oxides (NOx) emissions, produced as a by-product during the combustion process.
How hot does a EGR tube get?
The maximum temp at the egr flange end of the tube was 339.8 F. The maximum temp at the plenum flange was 178.2 deg. F. The silver solder melts at 700 deg F.
How to install EGR valve?
However, you need to make sure the valve is properly seated and tighten the bolts to the proper torque. Position the new valve against the pipe and thread the pipe's nut by hand, if yours comes equipped with it.
How long does it take to replace an EGR valve?
In most models, replacing an exhaust gas recirculation (EGR) valve is not difficult. You can do it in your garage in about an hour or two, depending on your particular system, using some common tools and a good solvent like carburetor cleaner.
How to remove more than one vacuum hose?
If you need to remove more than one vacuum hose, you may one to label each one to make sure you install back the hoses to their corresponding ports. Check the condition of each vacuum hose. Replace those that show signs of wear or damage. Unplug any electrical connectors from the EGR valve or sensors, as necessary.
What is an EGR valve?
An exhaust gas recirculation (EGR) valve, when it is working correctly, recirculates exhaust gases through the engine to reduce emissions of oxides of nitrogen (NO x ). Usually, EGR valves don't totally fail. But stopped-up passages and ports will greatly affect valve and engine operation.
Where is the EGR valve located?
The EGR valve is usually located around the top or backside of the engine, and to one side of the cylinder head, close to the intake manifold, or on the intake itself. Depending on your particular model, the EGR valve may connect to a pipe that goes to the exhaust manifold.
How many hoses do you need to disconnect to remove EGR?
Different types of EGR systems are in use today. So you may need to disconnect more than one hose, electrical connector, or sensor to remove the EGR in your vehicle. If necessary, consult your vehicle repair manual.
Why remove carbon buildup from valves?
The main causes of carbon buildup are driving mostly short trips or within the city, and an increase in engine oil consumption due to wear and tear.
How to find the correct EGR valve?
1. Purchase the correct EGR valve for the make and model of your vehicle. Check with your owner’s manual to find the right one. If you cannot find the correct EGR there, check a parts manual or with an associate at an auto parts stores.
How to test EGR valve?
1. Use a multimeter to test the EGR valve. A multimeter tests the electrical wiring in your vehicle. The multimeter has a few settings, but you only need to set it to Volts for this test. The multimeter has black (negative) and red (positive) leads with metal clamps that connect to the wiring in your engine.
What is an EGR valve?
Most vehicles are now equipped with an Exhaust Gas Recirculation (EGR) valve to reduce emissions. Several symptoms can point to EGR valve problems: failed emissions test, poor idling, or random changes in engine speed. There are a few methods for testing an EGR if you’re unsure that it’s defective.
Where is the electrical cable on an EGR valve?
The electrical cable is located on top of the EGR valve. Grab the electrical cable with your hands and pull it. If the electrical cable is held in by a clip or clamp, use a flat-bladed screwdriver to press it down and release it. Use a wrench to remove the bolts on the EGR valve's mount.
Discover how an EGR valve functions and how to replace one
An EGR valve replacement is very easy, so any DIY mechanic can do it by yourself using only some necessary hand tools.
How does an EGR valve function?
EGR works by recirculating a portion of an engine’s exhaust gas back to the engine cylinders. When the engine combustion temperatures reach 2500 degrees, then increases the formation of smog-producing nitrogen oxides (NOx). EGR valves function by small recirculating amounts of exhaust back into the combustion chambers.
When do you need an EGR valve replacement?
The most common problem with EGR valves when they become stuck open or closed due to carbon build up. There are some signs of its failure:
Where is the EGR valve located?
– As a rule, the EGR valve is located in the upper area of the engine block directly in front of the so-called intake manifold. Since the EGR valve has a similar shape in all vehicle types, you can easily identify it.
Can EGR valves be repaired?
However, if it becomes defective, it can no longer perform this task. This can have an effect on the performance of the engine and also on its service life. For this reason, defects in the EGR valve should always be repaired quickly.
Can you replace an EGR valve yourself?
Basically, it is not a problem to replace the EGR valve yourself. This is even possible without special tools or extensive experience. However, this actually applies to the replacement itself.
How to remove a clogged EGR valve?
The only way to remove the clog is to run a drill or snake down the passage and vacuum out the crusty carbon. On older cars operated by engine vacuum, the EGR valve diaphragm can deteriorate and leak, causing a rough idle and a check engine light. In that case, the valve should be replaced.
Why is the EGR valve important?
So the EGR valve is a critical component of your car’s emission system to reduce smog and lower combustion temperature.
How does an EGR valve reduce pollution?
An exhaust gas recirculation EGR valve reduces pollution by sending a portion of the exhaust gasses back into the engine when the car is cruising at higher speeds. Engines need less fuel when they’re cruising. Since the engine cylinder is a fixed size, it must be filled with either a full dose of air and fuel, or a partial dose ...
What happens when a spark plug is not in EGR flow?
Without EGR flow, the combustion chamber runs hot causing the fuel to ignite before the spark plug fires. The early ignition causes the piston to push backwards against the crankshaft while it still pushing the piston up. The sound you hear is metal crashing against metal.
Is it cheaper to remove a valve or replace it?
But you often wind up paying more due to the labor to clean the valve. In most cases, it’s cheaper over the long run to remove and replace the valve.
Do you need to replace an EGR valve?
Or, the EGR position sensor can fail, causing a check engine light. If your car is running fine at idle and you don’ t have a check engine light, there’s no need to replace or clean an EGR valve.
How to clean EGR valve?
Start by removing the EGR valve, spraying it with a carb cleaner, and scrubbing it with a wire brush. If this works, you’ve just saved yourself a few hundred bucks! But if you narrow down your problem to the EGR valve and cleaning, it doesn’t do the trick. There’s good news and bad news.
How does an EGR valve work?
Your EGR valve works to send the right amount of exhaust back to the combustion chamber – one of the advantages of this is that it reduces the combustion chamber’s temperature and improves efficiency.
Why is the EGR valve important?
One of the lesser-known perks of the EGR valve is that it actually reduces engine knocking. Keeping the combustion chamber at a lower temperature prevents the fuel from igniting before it should. While this won’t always happen if you have a faulty EGR valve, the chances go up dramatically if the valve is stuck closed.
What happens when the EGR valve is stuck?
But when the EGR valve is stuck open, the engine will suck in air that is already measured by the MAF sensor, leading to a lean air-fuel mixture and a reduction in fuel consumption. While this might sound like a great symptom, it can damage your engine.
Why is my EGR valve stuck open?
If your EGR valve is stuck open, then you’re going to get a rough idle, especially when your vehicle hasn’t warmed up yet. That’s because usually, the EGR valve starts in the closed position. However, if the EGR valve is stuck closed, you’ll notice more problems while idling after the engine has already warmed up.
Why does my EGR light come on?
Whether the EGR valve is clogged, stuck open, or stuck closed, you’re going to get a check engine light. While the check engine light will usually point you straight to the EGR valve, it is possible that it might come on due to a symptom instead of a cause. For instance, you might get a check engine light that indicates excessive exhaust chemicals ...
How much does it cost to replace an EGR valve?
The average EGR valve replacement cost is between $225 and $800, depending on the vehicle you drive and where you take it into repairs. You can expect the EGR valve to cost $150 to $400 while labor costs $75 to $400
EGR Valve Replacement
How to Replace It
Tools and Other Items You'll Need
I. Locating The Valve
II. Removing The EGR Valve
III. Cleaning The Valve, Passages, and Ports
IV. Installing The EGR Valve
- Installing the EGR valve is a simple process. However, you need to make sure the valve is properly seated and tighten the bolts to the proper torque. 1. Position the new valve against the pipe and thread the pipe's nut by hand, if yours comes equipped with it. 2. Position a new gasket and start the valve's mounting bolts through the EGR and gasket ...
Questions & Answers