Dodge caliber issues

I hate this car. I bought it off off my brother whom
really never drove it. He got a hella deal and is a
mechanic and helped me out in a needy situation.
He bought a junk/parts caliber to replace damn
near everthing needed which wasn't much... New
starter and ignition. Now month later it willhave lil
fits and not wanna start. But if i wait a half hour or
so it'll b fine. Also something recently caused the
starter wires to loosen so if i wait till it cools down
i can wiggle wires and BOOM it starts. Who wants
to keep doin that??? Now the malfunction light
indicating engine transmission issues is on. If i
drive over 65 the temp light will come on smh...i
live in the city and have alot of highway miles in
comparison to others and idk if that makes a
difference. This car is my biggest headache! Best
of luck to y'all and thanks for your stories. Stay
blessed