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EGR Systems

When the temperature in the combustion chamber becomes extremely hot, nitrous oxides are formed, which then turn into smog. In order to reduce such occurrence, the exhaust gas recirculation system minimizes the temperature in the combustion chamber.

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How much does it cost to replace a windshield 99 dollar replacement 602-275-5066?

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  1. Could I get a windshield replaced in Marietta Georgia for my Mazza B 2300 pickup truck in the hundred dollar range

How do you know if a egr valve is bad?

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Asked by Wiki User

Depending on the vehicle the check engine light would illuminate.

How do you change the egr valve on a 1994 mercury grand marquis?

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Asked by Wiki User

Jack up the passengers side of the car, get a 1 1/16" wrench break loose the fitting to the manifold, hold a 24 mm wrench on the fitting to the manifold, loosen the flare nut on the tube. Then using a 10 mm socket, about 2 inches long, loosen the two nuts under the EGR valve, then take the both out, remove the vacuum hose to the top of the EGR valve, and the sensing line from the small tube. then completely remove the flare nut from the orifice fitting on the manifold. BE CAREFUL with the tube, do not bend it or break it, you may find PB blaster useful the night before on a cold engine loosen these fittings. Once the EGR valve is out, remove the orifice out of the manifold, remove the tube from the EGR valve, again be careful, mark the tube to EGR position before pulling this off, because the top fitting to EGR needs tightened before you put it back in, it will make the lower fitting difficult if you do not line it up right, dry fitting from under the car is helpful, mark it, and then tighten the top. Clean out the tube, be careful not to bend the little tube, either inside or outside the larger tube, it sticks out inside. Clean the orifice, clean the manifold face carefully not to score it, check for blockage there too. Apply antisieze to the orifice, put it back in the manifold, then apply antisieze to the bolts for the egr valve, and the flare nuts both ends. Apply some silicon to the egr valve face, just enough to hold the gasket in place, put the new gasket on, start the bolts two turns in the gasket, it will hold them in place, then start them in the manifold, then start the lower flare fitting to orifice, tighten the top bolts, and then the flare nut, connect the vacuum line, connect the sensing line. I just recently did this process, it works, if have other EGR issues, the valve is the easiest.

What is the function of a pcv valve?

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Asked by Wiki User

The purpose of the PCV valve is to regulate the flow of crankcase fumes into the intake manifold where they can be burned. Prior to 1963, cars had no PCV and used road draft tubes that just left the hydrocarbon emissions from the crankcase out into the open air. The PCV valve also has a secondary role as a check valve, to prevent flow back into the crankcase. This prevents potential ignition of the crankcase fumes, should the engine backfire. The PCV system is also crucial for to proper engine sealing. The system alleviates crankcase pressure, which can push out on seals and gaskets, contributing to oil leaks.

Where is the EGR valve for a 1995 Jeep Cherokee?

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Asked by Wiki User

According to Alldata the 4.0L engine is not equipped with an EGR Valve. You don't have one on the 4.0

Where is the EGR Valve on a '98 Jeep Cherokee 4.0 Liter?

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Asked by Wiki User

There isn't a EGR on your 98. The last year that offered that was 90. There isn't a EGR on your 98. The last year that offered that was 90. There isn't a EGR on your 98. The last year that offered that was 90.

How do you replace the EGR on a 2000 Maxima?

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# The EGR valve is bolted to the rear cylinder head,at the transaxle end # Remove the air intake duct from the throttle body and air filter housing # Detach the vacuum line from the EGR valve.Disconnect the EGR pipe nut # Remove the EGR valve mounting fasteners # Remove the EGR valve and gasket from the manifold.Discard the gasket

Where is the EGR valve on a 2001 Tahoe?

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Asked by Wiki User

Open the hood. Look at the right side of the top of the motor and you'll see a 4 inch diameter flexible plastic hose connect to it (it runs to the air filter box). Look a few inches to the left and a few inches towards the winshield from where that hose attatches to the motor and you'll see the EGR valve. It will be metal, have a round shape about 3 inches across.

95 astro van runs rough and blows black smoke?

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Asked by Wiki User

The black smoke is usually unburned fuel from the vehicle running too rich. If the check engine light is on you can pull the codes which will give you guidance. O2 sensors are common as well as a variety of ignition & other sensors. Test components before replacing, you can spend a lot of money guessing and throwing parts at the vehicle.

What would a bad EGR valve gasket cause?

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Asked by Wiki User

Poor performance, poor economy, rough idle, lean burn causing valve or piston problems...

Where is the EGR valve located on a 1996 F 150 with a 5.0L engine?

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Asked by Wiki User

4.2L, 4.6L, 5.4L and 6.8L Engines 1. Disconnect the negative battery cable. 2. Remove the vacuum hose from the EGR valve. 3. On the 4.6L engine, remove the nut and brake booster bracket. 4. On the 5.4L engine, remove the DPFE sensor retaining nuts and place the sensor to the side to allow access to the EGR tube. 5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve. 6. Remove the EGR valve mounting bolts, then separate the valve from the intake manifold. 7. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold. To Install: 8. Install the EGR valve, along with a new gasket, on the manifold, then install and tighten the mounting bolts. 9. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 25-35 lbs. (34-47 Nm). 10. Connect the vacuum hose to the EGR valve. 11. On the 5.7L engine, install the DPFE sensor. 12. On the 4.6L engine install the brake booster bracket and the retaining nut. 13. Connect the negative battery cable.

How does a 4 stroke engine work?

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Asked by Wiki User

As the name states there are 4 strokes in a 4 stroke engine. Intake, when the piston draws in air/Fuel mixture. Compression, when the intake valve closes and the piston moves to the top off the stroke. Power stroke, when the compressed mixture is ignited, forcing the piston down. Last the exhaust stroke when the piston starts moving up and expells the burnt gases.

Where is the egr valve located on a 2000 ford windstar?

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Asked by Wiki User

The EGR valve on a 2000 Ford Windstar is located on the intake manifold near the firewall. It is typically located to the left of the main throttle body or slightly lower than the throttle body.

  • On the passenger side it is located on the side of the intake manifold closest to the firewall.
  • On the driver side it is located on the side of the intake manifold closest to the engine.

How do you replace an EGR valve on a 2001 Ford Focus with DOHC engine?

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Asked by Wiki User

Removal

Remove the air cleaner outlet tube.

Disconnect the mass air flow (MAF) sensor electrical connector.

Disconnect the breather pipe.

Remove the air cleaner.

Fully loosen the exhaust gas recirculation (EGR) valve to exhaust manifold tube nut from the bottom of the EGR valve.

Disconnect the vacuum line from the top of the EGR valve.

Remove the EGR valve.

Remove and discard the EGR valve gasket.

Installation

NOTE: Use a new EGR valve gasket when installing the EGR valve.

To install, reverse the removal procedure.

What does the EGR valve do?

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Asked by Wiki User

I believe you mean the "EGR" valve. Exhaust Gas Recirculation valve. It is an emissions control device. When the cylinder temperatures exceed 2500 degrees F the EGR valve will open to allow enough exhaust gas (which is inert) to cool the cylinder. This prevents the formation of NOX, which is a huge contributing factor to smog.

An EGR valve takes 5 - 15% of the exhaust the exits your car. You can have troubles with this part due to the carbon build up from all the exhaust passing through it causing the valve to get stuck open or shut.

EGR stands for Exhaust Gas Recirculation. EGR systems cause exhaust gas to be recirculated to the engine cylinders. Recirculating exhaust gas will reduce Nitrous Oxide emissions in diesel and gasoline engines. It does not recirculate exhaust gas in order to burn unburnt fuel. The EGR valve is the control valve which regulates the amount of EGR being recirculated. The valve is controlled form the engine management system.

Why does your exhaust blow black smoke?

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Asked by Wiki User

Black smoke from the exhaust it a symptom of an overly rich fuel/air mixture. Have this repaired or it will destroy your O2 sensor and catalytic converter.

Where is the egr valve on a Chevy engine?

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I changed EGR on a 88, 5.7 and it is located in the intake manifold near the throttle body (carb) just in front of.

What do the egr valves do on a 305 Chevy?

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The EGR valve in computer controlled engines allows the computers to run the vehicle at a more lean rate without destroying valves and/or pistons. Only a small percentage of the exhaust gas is allowed back into the combustion chambers; just enough to reduce the oxygen percentage in the air mixture, thereby preventing the super-hot combustion that takes place when the fuel in the mixture is reduced. Carbureted engines are deliberately run at a more "rich" mixture to prevent the destruction of the metal parts.

Another answer:EGR. Exhaust, Gas, Recuirculation. It runs the exhaust back through the motor, to burn any unburned fuel, before exiting the tail pipe. It actually aids the catalytic converter. This is what allows the above answer to hapen.

Why does your 1995 dodge caravan have white smoke that smells very strong of gas coming out of my tailpipe?

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Asked by Ebrewer

That's probably unburned fuel. The "check engine" light usually means you've got a problem with the engine emission controls. It's probably a faulty sensor or valve. I'd suggest taking it to a dealership to have the engine "scoped".

Where is the egr valve located on 1999 Astro?

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Asked by Wiki User

It is just below the throttle body. Follow the air intake from the filter to the tb. It is cylindrical in shape and has a 5 wire connector. You can see it in mine without removing the air intake ducting.

Is removing egr valve from diesel engine legal?

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Asked by Wiki User

No, it is no different than removing a catalytic converter.

No, it is no different than removing a catalytic converter.

Can you clean egr?

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Yes, you absolutely can clean your EGR. Many times, a dirty EGR will cause a check engine light to come on, and many auto repair shops and especially dealer service centers will advise you to replace the EGR instead of cleaning it. There is no way to harm the EGR during the cleaning process, and usually it's very easy to get to and remove so there is not much to lose here by trying it.

To clean the EGR, first remove it from your vehicle and then get yourself a can of brake cleaner from any auto parts store or walmart (around $2-$3). Spray inside the EGR with the brake clean and if you have any type of cleaning utensil, such as a small brush or pipe cleaner, start scrubbing what you can inside it. Make sure that the little pintle on the bottom of the EGR moves freely as well. Often times the pintle will not move due to excessive carbon deposits and this can throw a code as well.

It can be tricky getting inside the EGR with a little brush to clean it, but just remember, it doesn't have to shine. Just do the best you can and reinstall it. Often times you can reuse your EGR gasket as well. Disconnect the battery for around 10 minutes to reset your codes if you don' have access to a scanner. Autozone, Advance auto, and O'rielly will scan and erase your codes for free if you need to go that route.