Where is egr valve on 2003 olds sihloette 3400 engine

The EGR valve is located at the rear of the engine, on the right side. The wiper arms, cowling and wiper transmission assembly all need to be removed to access the EGR.

Make sure egr valve is closing propetly. Check for vacuum leaks.
Do It Yourself Diagnosis and Repair

Betty, Check the attached EGR links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Exhaust Gas Recirculation Valve EGR Checking
Faulty EGR Valve Symptoms and EGR Valve Cleaning
EGR Valve Replacement Chevy Venture 3 4L Engine
Installing New EGR Valve

I want to change the EGR valve Myself in my 2003 Hyundai XG350L anyone know how to do that?

yes you have egr valve
its on the passenger side of the motor back at the fire wall
you can also locate it by looking at you exhaust
you will see a tube that goes from the exhaust up the fire wall and into the egr hope this helps
give feed back

see pics below. Please let me know if you have more questions.

3.4Liter engine:



3.8 Liter engine (#1 below):


part look like this:

The EGR Valve is located on the front of the Engine under the frest air tube. It is at a 45' angle. When checking look for lodged carbon chunks. I recommend using a gesket with a screen built in. It is located infront of the Thermostat housing.

its on the rear of engine, but caution theres a updated egr kit for these vans due to lots of egr problems,also the waterport should be remove to clean all egr ports and drilling the intake is needed to use updated valve.call your dealer lots of these have recalls on them.hope this helps.

If you don't know where the EGR Valve is located, it is safe to assume that you did not properly diagnose your EGR system...how do you know the valve needs replacing?

If you are trying to fix a trouble code P0401 " Exhaust Gas Recirculation (EGR) Insufficient Flow" (This is a very common code with 3.1L GM Engines)
An EGR Valve replacement will most likely make you about $125 poorer than you were before and will not fix the problem.

Your EGR port into the intake manifold is most likely clogged up and needs to be cleaned out.

You will need a Throttle Body Gasket, an EGR Gasket, a can of ThrottleBody and Intake Cleaner, and a little antifreeze. (You will lose just a little when you remove the throttle body.)


Remove the EGR Valve and the Throttle Body. Use a screw driver or pick to chip out the carbon buildup in the EGR port going into the intake manifold. You will probably have to work it from the intake side as well as the EGR side to get as much of the black carbon out as possible. Be careful not to let this stuff go down into the intake plenum - you will burn some valves if it gets in there. Then use the Throttle Body and Intake cleaner to finish the cleanup. (It helps to take a rag and stuff it into the intake manifold just past the EGR port to catch the gunk so it doesn't go down into the plenum...just don't forget to remove the rag before putting the Throttle Body back on)

Put everything back together and top-off your antifreeze and clear your computer codes. That should fix it.