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Alright guys my engine light turned off and thermostat has started working again, this is just strange, I will keep an eye on it and may even replace the thermostat anyways and I truly appreciate everyone's help in this thread and forum, thank you very much!
Of course it turned off - it's an intermittent issue. In the meantime, it will disable the A/C and may cause the transmission to shift abruptly. Just change the thermostat - it won't heal itself.