Question about 1992 Honda Accord

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Egr what is the purpose of an egr.

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Its an electronic gas regulator

Posted on Jan 19, 2009


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Should a car run with the EGR valve removed?

I guess the answer depends on the purpose of the question.
Yes the engine can run without the EGR in place. If the EGR is removed and the engine started it should make a huge noise from the exhaust leaking. So you should not drive it with the valve removed.
The EGR valve redirects some of the exhaust gas back thru the intake to be reburned. That reduces emissions going out the tailpipe.

Jul 30, 2012 | 1994 Jeep Grand Cherokee

1 Answer

Is there any issue if we bypass the EGR valve?..

You cant,without the EGR having a clear flow you end up with a hole in your piston.The purpose of the EGR not only is it emission such as Nox.But it cools the combustion chamber.Ten year ago yes it interfered with power now the engine fuel stratedgy is to have a EGR,The MAF looks for the opening

Apr 01, 2012 | Honda Civic Cars & Trucks

1 Answer

I have a 96 sonoma 2.2 thats running too rich and has a p1406 code

P1406 EGR Valve Pintle Position Circuit Fault
This code is usually caused by carbon buildup in the EGR valve. The carbon deposits prevent the valve from closing completely.

After removing the EGR valve, clean the pintle seat area of the valve and the corresponding passageway in the engine.

or simply replace the EGR valve.

The purpose of you EGR Valve is to recycle un-burned fuel back into the engine, not only improving fuel economy by reducing the engines pumping losses, the EGR increases the mass in the intake; more mass means higher pressure, or less vacuum. Now the piston has less resistance during each intake stroke, which results in better gas mileage.

So if your EGR Valve is clogged, damaged or simply just not working - the those rich un-recycled fuels will make your car burn richer. (Which will make you burn more fuel.)

Hope this helps!

Mar 07, 2012 | Cars & Trucks

2 Answers

If i have to unplug the egr valve should it b left open or closed?my cars idlin bad an dont want to go,it dies at lights an stop signs

that sounds more like idler control valve, but the egr is in close position all the time, opens only when is in gear, and is controled by computer, rpms, etc. Thanks.
P.S. what you can do is to check if is open when the engine is off, is this is the case then you need a new egr. good luck.

Apr 09, 2011 | 2001 Ford Focus

3 Answers

1998 gmc jimmy 4.3 vortex engine has a metal flex pipe from top engine to outtake manifold on left side;what is its purpose and what is the name of this part

Hi, this is your EGR pipe. The EGR system is an emission control that feeds combusted gasses back into the intake to lower the combustion temperature. The flow is controlled by the computer thru the EGR valve. Please let me know if you have more questions, and thanks for using FixYa.

Feb 28, 2011 | 1998 GMC Jimmy

1 Answer

High nox fail smog test any remedies? 99

NOX is created when the internal combustion temperature gets to high.The egr system uses burnt exhaust gases to line to cylinder walls.The purpose of this is decrease internal combustion temperature therefore reducing the amount of NOX created.Would look to a possible egr malfunction usually they will trigger the check engine light but not always.The 4.3L has been known to have issues with carbon buil up in the egr and the egr pintle not open and closing properly.

Jun 07, 2010 | 1999 Chevrolet Astro

1 Answer

1996 Honda Accord Rough Idle Even After tune up performed Changed spark plugs, distributor cap and rotor wheel along with all spark plug wires, changed fuel filter, air filter, spent $150 on fuel injector...

Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps

Mar 02, 2010 | 1996 Honda Accord

2 Answers

What is the purpose of an egr valve?

exhaust recirculation helps with nox when you go through emissions

Oct 16, 2009 | 1988 Chevrolet S-10

1 Answer

Whate is code 1400 and 400 in nissan altima 2001. What does it mean when you get code for egr? How does it affect car?

P1400 DPFE Circuit Low Input
P0400 Exhaust Gas Recirculation Flow Malfunction

These codes represent a fault in the Auxiliary Emission Controls. Here's a brief describing of the EGR valve. The EGR stands for exhaust gas recycling valve. During cruising speeds, the valve opens allowing exhaust into the intake manifold. The purpose of this is to cool the temperature of the combustion inside the cylinder as the spark plug fires. This in turn, lowers emissions. If the EGR is stuck in either direction(open/closed), it can effect the idle of your vehicle and can stall it out at times. it can also trip the engine light as well. Good rule of thumb is to clean out the carbon out of the intake manifold thoroughly before you install a new EGR. this will prevent the engine light form coming on once more. if the carbon build up is high, chunks of it will jam the EGR, causing it to fail over and over.

Please rate and god bless.

Mar 26, 2009 | 2005 Nissan Altima

1 Answer

What are the symptoms of a bad egr valve ina 1994 geo tracker?

this may help
EGR Theory. EGR serves one purpose and one purpose only. That purpose is to reduce Oxides of Nitrogen (NOx). Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and Hydrocarbons (HC) in the fuel combind into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged. Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO). After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2). In the presence of sunlight,
it combines with other compounds like Hydrocarbons and forms Smog. Since exhaust gas is inert (very stable) it doesn’t burn again. So by being introduced into
the combustion chamber, it will lower combustion chamber temps enough so that
the Nitrogen doesn’t react with the other compounds and is passed unchanged out
the tailpipe thus not contributing to smog. Now, since exhaust gas doesn’t burn, it
doesn’t exactly help with combustion. At higher RPM’s, this really isn’t noticable,
but at idle, the reintroduction of exhaust gas will cause a very rough idle and can
cause stalling if to much is introduced into the combustion chamber

Feb 01, 2009 | 1996 Geo Tracker 2 Door

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