My vehicle has engine surge at around 1500 rpm. It bounces around 200 rpm. When I put the cruise control on it doesn't do it and drives smooth. I have replaced the TB, vent solenoid and PCV. What is most confusing is why would the cruise control fix the problem?
What makes this problem better or worse?
It's constant
How long has your 2010 Hyundai Genesis Coupe had this problem?
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