While driving my 2013 Elantra, the speedometer sometimes jumps o r s suddenly. Could a failing speed sensor be responsible? Are there any other signs

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While driving my 2013 Elantra, the speedometer sometimes jumps o r s suddenly. Could a failing speed sensor be responsible? Are there any other signs

My 2016 Hyundai Elantra has rough idling and sluggish acceleration. Someone suggested it might be the mass air flow MAF sensor. How can I tell if it’s failing, and can I clean it instead of replacing it?

Gari Specialist asked on 11 Jul 2025 13:01:53 pm

1 Answer

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Gari Master - on 11 Jul 2025 13:05:01 pm

The MAF sensor measures air entering the engine to balance air/fuel mixture.

Symptoms of failure:

Rough idle

Hesitation o r stalling

Poor acceleration

Reduced fuel economy

Check engine light e.g., P0101

You can try cleaning the sensor with MAF cleaner spray if it’s dirty do not touch the sensor element. If cleaning doesn’t help, replacement may be needed. It’s usually located near the air intake box and costs ~$50–$200.