I have a Hyundai accent and want to diagnose problem

Asked by Nov 19, 2016 at 08:55 PM about the 2010 Hyundai Accent

Question type: Maintenance & Repair

it has been running rough at highway speed, and engine makes more noise
than usual. The check catalytic converter warning light is on. Also when I use
the cruise control it sometimes surges from 3000 rpm to 6000rpm, and then
adjusts back down to normal. What could be causing this

2 Answers

33,995

Maybe you should check the catalytic converter?

1 out of 1 people think this is helpful.
209,855

Misfires? Scan the car for the fault codes since the CEL is on.

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