2004 honda odyssey egr valve how to#

If this works, you’ve just saved yourself a few hundred bucks!īut if you narrow down your problem to the EGR valve, and cleaning it doesn’t do the trick, then there’s good news and bad news. Start by removing the EGR valve, spraying it with a carb cleaner, and scrubbing it with a wire brush. You can expect the EGR valve to cost $150 to $400, while labor costs $75 to $400īut before you jump straight to replacing the valve, see if you can’t clean it first. The average EGR valve replacement cost is between $225 and $800, depending on the vehicle you drive and where you take it into repairs. Look for a metal tube coming to the top of your engine, then locate the valve that’s attached to it, and you’ve found your EGR valve in many car models! Some car models are totally integrated into the cylinder head, though, and do not have these pipes. It can be hidden deep into engine bays on some models, so to say that it is always easy to locate would be a lie.

If you know what you’re looking for, the EGR valve is usually very straightforward to find and get access to. Your vehicle’s EGR valve is typically located at the top of the engine and generally connects to a pipe that runs from your exhaust. But when these sensors fail or the EGR valve gets stuck, you’ll run into problems. Since the EGR valve runs off sensors, it knows when to open and when to close to optimize performance. This different chemical makeup allows the combustion chamber to stay up to 150 degrees Celsius cooler, which produces cleaner exhaust and improves overall engine performance. Not only that, but the exhaust has a different chemical makeup than fresh air. First, it optimizes the fuel to air ratio without pulling in extra air from the intake. Recirculating the exhaust does a few things for overall performance. EGR Valve stands for exhaust gas recirculation valve, which breaks down exactly what it does. The EGR valve takes specific amounts of exhaust and recirculates it back to the combustion chamber. RELATED: 6 Causes of a Knocking or Pinging Car Engine EGR Valve Function If you can, you need to make repairs immediately before any further damage occurs.

If you have a check engine light on for a faulty EGR valve, keep an ear out to see if you can hear any knocking. While this won’t always happen if you have a faulty EGR valve, the chances go up dramatically if the valve is stuck closed. Keeping the combustion chamber at a lower temperature prevents the fuel from igniting before it should. One of the lesser-known perks of the EGR valve is that it actually reduces engine knocking.

2004 honda odyssey egr valve how to#

RELATED: Rough Idle Causes & How to Fix it 6. That’s because the EGR valve is typically open then as it recirculates exhaust to lower the overall temperature of the combustion chamber. However, if the EGR valve is stuck closed, you’ll notice more problems while idling after the engine has already warmed up. That’s because usually, the EGR valve starts in the closed position. 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. You might also notice that your acceleration has become jerky or rough. You’ll notice the problem more at lower speeds if the EGR valve is stuck open and at higher speeds if the EGR valve is stuck closed. Not only does an optimized engine improve fuel economy, but it also improves engine performance. While this might sound like a great symptom, it can damage your engine. One of the advantages of this is that it reduces the combustion chamber’s temperature and improves efficiency.īut 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. Your EGR valve works to send the right amount of exhaust back to the combustion chamber. You might notice slightly more smoke when the EGR valve is bad, but this isn’t very common. In fact, if you have a faulty EGR valve, your vehicle will most likely fail an emissions test. Your EGR valve’s primary purpose is to reduce emissions, so you can expect that if it’s not working correctly, your overall emissions will increase. For instance, you might get a check engine light that indicates excessive exhaust chemicals or misfires, even though the problem stems from a faulty EGR valve. 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. Whether the EGR valve is clogged, stuck open, or stuck closed, you’re going to get a check engine light. There are tons of sensors monitoring your emissions, engine performance, and even the EGR valve’s performance.