I will be driving my KK for a while and all of a sudden I see my coolant temp gauge begin pulsing then it turns off. Immediately after my check engine light comes on, my battery light comes on, and my service 4wd light comes on. All the lights remain on until I turn off my KK and turn it back on again. The check engine light remains on and gives a thermostat replacement code. I have replaced my thermostat twice and it keeps happening. Any ideas? Thanks!