Rough Idle Due to Faulty EGR Switching Valve on Hyundai XG350

A defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.

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Average mileage: 108,280 (65,000–189,000)
Engine affected: 3.5L V6
4 model years affected: 2002, 2003, 2004, 2005
18 people reported this problem
7 people shared problem details
2002 Hyundai XG350- 3.5L V6189,000
I need to know where the egr valve is located on the the car.
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2002 Hyundai XG350- 3.5L V685,000
Rough idle but ok if I put it in neutral. Haven't fixed it yet.
Rough idle. Took it to repair. Tech said evr valve. After service, it still idkes rough. Took it back tech said nothing wrong car over 10 yes old is not going to run like new.
2005 Hyundai XG350- 3.5L V6
when car is in park the car vibrates and the rpm guage wont go down passed 2 on the gauge car vibrates until car is turned off
Not fixed yet, but same problem occurs intermittently
2003 Hyundai XG350- 3.5L V6140,091
EGR valve welded to threads. Finally removed new installed and same problem. Back in shop.
2005 Hyundai XG350- 3.5L V676,100
rough idle. has not been fixed. diagnosed as possible egr swich issue. dealer that sold me the car is supposed to be repairing it and also all required maintenance. I am waiting 3 weeks
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