Mazda 6 - 2014 idle revs moving up and down

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Sat 10 Feb 2024 16:28
Mazda 6 - 2014 idle revs moving up and down - NickosWirral

Just noticed that at idle the revs move between about 600 and 700/750 every say 10 seconds.

You can hear a mechanical sound or some sort of solenoid in the engine bay when this happens.

I'm guessing this is not normal?

Many thanks

Edited by NickosWirral on 10/02/2024 at 16:29

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Sat 10 Feb 2024 18:19
Mazda 6 - 2014 idle revs moving up and down - elekie&a/c doctor
Do you have the Aircon switched on ?
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Mon 12 Feb 2024 17:57
Mazda 6 - 2014 idle revs moving up and down - kiss (keep it simple)

Maybe the battery needs to be replaced. I had very erratic idling on my 2012 model. First did an ECU reset so it could re-learn and this worked for a week. Put in new battery and problem hasn't recurred in 3 years. It's odd because car started fine but there must have been enough of a voltage drop to cause the ECU to lose its settings.

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