Hi everyone,
I drive around 65,000 miles, and recently I’ve been noticing a rough idle issue.
When the car is stopped (like at traffic lights), the engine sometimes vibrates more than usual, and the RPM slightly fluctuates. It’s not stalling, but the shaking is noticeable inside the cabin. While driving at normal speeds, everything feels fine.
There’s no check engine light on, and fuel consumption seems normal. I’ve already checked basic things like fuel quality and haven’t made any recent repairs or changes.
Could this be related to dirty throttle body, spark plugs, or engine mounts? Has…
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In my case I had a lot of the same hesitation while accelerating, intermittent dead batteries, and low power to accessories. Unplugging my radio actually helped make the hesitation less frequent due to the lower power usage.
Anyone with similar symptoms, at least for 1995-2006 years, I strongly encourage looking at/just replacing the alternator. It's cheaper on the Elantra than many other cars I've encountered anyway.