Andrey G

Looks strange. Did you shake board while taking this log or it was stable? Do you have anything connected to CAN bus? We have support for CAN accelerometer and both...

@zed65 yes. I received IMU. Actually I have already connected it to disco board. But did not have time to look into issue.

Done on https://github.com/rusefi/rusefi/pull/6714

High CPU load/too long critical section with disabled IRQ. Both can cause delays in ADC start. Currently GPT -> IRQ -> start ADC conversion path is used. We can use...

Looks like really related to SD/MMC access. 

Possible reason https://github.com/rusefi/rusefi/pull/6712

https://github.com/rusefi/rusefi/pull/6443 https://github.com/rusefi/rusefi/pull/6433

I think no one try serial debug output on f0. Easiest way to get debug is to connect f0 module to some RusEFI ecu and write log. Wbo emits debug...

Also double check that your Ip current pump is working and correctly connected. Without feeding pump temperature measurement can go wrong.

Also you can try this test branch https://github.com/dron0gus/wideband/tree/underheat-issue . Issue is still in debug, but looks similar to yours.