I am currently tuning my morning cold starts and noticed my CLT values are really strange. I think there may be a problem with my temp sensor but I wanted to get a 2nd opinion in case I am viewing the data incorrectly. The fluctuations are roughly 20 degrees within a few seconds. Thank you.

Edit: forgot to mention it's a 1.6 DIY MSII.

 

Check the wiring on your sensor. No idea if you have a 1.6 or 1.8 but check them wherever they might be.
Then, if still fluctuating, I'd replace the sensor.