Idle RPM jumping after ECU reset - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 3 (permalink) Old 06-21-2017, 12:26 PM Thread Starter
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Idle RPM jumping after ECU reset

Hi!

I had to disconnect my Mazda 6's battery and after that the idle at stop lights (or switching to neutral and releasing gas) jumps between 550-750 RPM few times, then stops doing that and stays at around 700. There's no DTC's. It never stalls.

After reconnecting the battery I let the car run for 20 minutes without any electrical load + 15 minutes with A/C on. Does the car need more time and driving to adjust the ECU with the TB and fuel trims?

I got a short video aswell: https://youtu.be/Lz7BoTNm7SU

The car is 2007 GG Mazda 6, 2.0L 108KW MTX.


Thanks!
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post #2 of 3 (permalink) Old 06-21-2017, 11:11 PM
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It's possible. Sometimes it takes a bit longer to have them get sorted out
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post #3 of 3 (permalink) Old 02-26-2018, 10:46 AM
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It need to run so long that the fan goes on, and if its winter there, that can be difficult.

6 2.0 -06
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