engine rpm surging highand low at idle and driving speed.

Asked by Dec 24, 2014 at 05:22 AM about the 2000 Hyundai Elantra GLS Sedan FWD

Question type: Maintenance & Repair

Engine rpm surges at idle and at highway speeds. Engine goes high and low, up and
down. Can you help.

3 Answers


Is the check engine light on to indicate there are any codes? Possibilities could be a bad sensor or vacuum leak somewhere.. Taking a guess. It's difficult to diagnose an engine problem without any diagnostics or data.

4 people found this helpful.

no lights come on.

3 people found this helpful.

Yes engine light comes on.

Your Answer:


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