Unstable Nozzle Temp

[printerfan 5]

I've noticed that my nozzle temperature will occasionally jump around crazy during the start of a print. I am printing in PLA at 210C, but the nozzle will drop to 205 then shoot up to 212 and will flux.

What would cause this, loose cables on the print head?

[peggyb 161]

check if all your cables on top of the print head are secure: the thin ones going into the green block and the white connectors. Sometimes they can get a bit loose because of the motion. And separate the fan wires as much as possible from the rest.