Temperature Sensor Issue or Throttle body ???

[fixkick]

Are your posts about 2 cars? IDK> if yes, first time for me in 13 years, here , any examples of that.

there is no step by step
the steps vary wildly by tests passing and failing. (someone made a logic flow chart for this and was HUGE< and vastly complex and the makers head exploded.)_ RIP him.
ask your doctor how that works , diagnosis is never easy.
First we test the actual engine
then spark
and fuel last.

my guess is fueling will fail., but that is only my useless guess. (based on age of car and for sure bad fuel)