Hyundai Genesis 3.8 Problems

Idle Fluctuation Concern on Hyundai Genesis 3.8

Problem Description and Possible Solution

An idle fluctuation may be noted, the Check Engine Light may or may not illuminate. Replacing the throttle position sensor and updating the powertrain control module (PCM) software will commonly correct this concern.

(7 people reported this problem)

Hyundai Genesis 3.8 Vehicles With This Problem

RepairPal Verified
Average mileage: 25,113 (5,340–36,000)
3 model years affected: 2009, 2010, 2016
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Viewing 1-2 of 2 comments
Turned on the A/C and the car started to rung rough and the check engine light came on. It was late on Friday and dealer will not be open until Monday so I am screwed about finding out why. This should not happen with a new car with only 5k miles.
The idle is unsteady, goes below 500 rpm at stops in traffic and fluctuates and sounds like it will stall out. Technician reloaded software and still hasn't fixed problem yet. Taking it back for service again to fix problem.