MSefi.com read only forum (Jan.15,2018)

Hi, new to the forum. Just got my RX7 with a vg30e nissan v6 running. I have MSII PCB3.57 with 2.6x firmware. Have a strange problem where the coolant temp sensor is losing it's calibration.
It did it a few days ago while sitting and yesterday while in the middle of test driving the car. Megatune shows 0 degrees on the gauge. This caused the cold advance and enrichment to kick in and my fan which is controlled by the sensor didn't turn on either of course and car started to overheat. I thought megasquirt had a limp home mode built in but I guess not?

Any suggestions on what might cause this? It is grounded at the same place on the block as my MS.

Does the problem also happen on the Stim or just on the car?

I don't have a stim. I bought the assembled kit from you guys.

I haven't tried to redo my connections on the pigtail yet but that is the next thing to try. Still doesn't explain why it doesnt go in limp mode of 170 degrees.

I would check the wiring first, then try reloading the code - this may be a firmware corruption issue.