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.

RepairPal Verified
Average mileage: 131,065 (95,000–180,000)
Engine affected: 3.5L V6
2 model years affected: 2003, 2004
5 people reported this problem
1 person shared problem details
2003 Hyundai XG350- 3.5L V6140,091
EGR valve welded to threads. Finally removed new installed and same problem. Back in shop.
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