Rough Idle Due to Faulty EGR Switching Valve on Hyundai Sonata

On the 2.7L V6 and 2.4L 4 Cylinder, a defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.

RepairPal Verified
Average mileage: 113,857 (5,400–320,000)
Engines affected: 2.0L 4 Cylinder, 2.4L 4 Cylinder, 2.5L V6, 2.7L V6, 3.0L V6, 3.3L V6
14 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2013
82 people reported this problem
34 people shared problem details
2003 Hyundai Sonata- 2.4L 4 Cylinder93,560
engine idles rough when in drive but not in neutral
2004 Hyundai Sonata- 2.4L 4 Cylinder37,000
Rough idle when stopped. Car shakes a lot.
2002 Hyundai Sonata- 2.4L 4 Cylinder67,000
engine light indicated need to repalce EGR valve. Did so a a week later it says the same thing again and idle is rough again. Why????
2001 Hyundai Sonata- 2.4L 4 Cylinder110,000
Rough idle, lack of acceleration at times, and poor gas mileage.
2004 Hyundai Sonata- 2.4L 4 Cylinder116,000
She runs ruff when idleing and even worse if the a/c is running . The shaking slows down if i put her in drive or neutral.
2002 Hyundai Sonata- 2.4L 4 Cylinder150,000
Rough idle and engine seems very rough while accelerating from a dead stop. Runs well at cruising speed. Only seem rough when the engine is under load.
2003 Hyundai Sonata- 2.4L 4 Cylinder45,600
Rough and unstable engine. Feels like gas is choked from engine or loose battery wires. Then car takes off. Scary! Not fixed yet
2004 Hyundai Sonata- 2.7L V6105,000
My 2004 Hyundai Sonata 2.7 V6 started having a rough, low rpm idle after it hit 105,000 miles. I haven't had it repaired yet but plan to do the work myself. Thanks cor the helpful information, much appreciated!
2002 Hyundai Sonata- 2.4L 4 Cylinder80,000
Roough idle, jerks a little when driving, began to stall. Will change Throttle Position Sensor and see what happens.
2005 Hyundai Sonata- 2.4L 4 Cylinder264,000
Car vibrates. Changed EGR solenoid valve. Still vibrates, check engine light still on, OBD II still reads exhaust gas recirculation low.
2001 Hyundai Sonata- 2.5L V6149,000
Car started shaking a lot when parked and engine was at idle. Check engine light is on and car shakes when in stopped in Park or Drive, but not neutral.
2002 Hyundai Sonata- 2.7L V6100,695
Check engine light, rpm fluctuations, shakes at stoplights. Also, has stalled when getting gas.
2002 Hyundai Sonata- 2.4L 4 Cylinder149,000
When car is idle on stop, rattling noise. But on neutral or drive sound dissipates.
2006 Hyundai Sonata- 2.4L 4 Cylinder159,000
My sonata dies when I slow down at red lights and when I slow down to make a turn.
2005 Hyundai Sonata- 3.0L V6125,000
when a/c in on the engine almost dies when in gear
2004 Hyundai Sonata- 2.4L 4 Cylinder
Failed emissions due to egr
2013 Hyundai Sonata- 2.0L 4 Cylinder5,400
Rough idle in drive
2011 Hyundai Sonata- 2.0L 4 Cylinder54,029
Car idles out and dies when stopped
2009 Hyundai Sonata- 2.4L 4 Cylinder85,000
Check engine light came on the first time when we were up at elevation. From there the engine (at different times) seemed to idle a little rough and get worse gas mileage.
2004 Hyundai Sonata- 2.0L 4 Cylinder200,000
car vibrates severely while idling in gear...but smooths out while in gear or neutral 2004 kia optima 4 cyl 2.4
Related Items:
The car vibrates when idling in any gear (not neutral or park). It is also very sluggish at tak...
For a month my car has tried to stall and shakes like crazy when I am idling. No codes ever sh...
Did tune up-Dist. cap/rotor/wires/plugs.96k miles. Ran 1 week ok then dead hole miss. Compres...
i replaced the egr valve on my 2001 sonata and it still idles rough. could it be the egr soleno...
When I switch on the a/c of my Hyundai Sonata it blows air which is not cold. The A/c switch sh...

Related Content