hey this is my first post, need some help.
at first it ran on high rpm’s and would barley go anywhere and so I took it home but right when I pulled in, the car shut off on me. I changed the ignition coils, cam position sensor and the fuel pump, but still won’t start up. Got a new battery also, I have a bad coolant leak; could that be it ? I just wanna get the right part and not have to replace things that don’t need to be replaced, any help?

 

A coolant leak won't cause a car to not start, engines will start with no coolant at all (not advisable). Considering the coolant leak, did your car overheat before it shut off? You said it's a bad leak, has it overheated often? Was it smoking from the exhaust on the way home before it died?

Aside from that, does the engine crank at all, or does it just click when you turn the key? Has the timing belt been changed or is it overdue? Do you have a way to check the fuel pressure? When you changed the ignition coils did you take the spark plugs out and check their condition? The plugs probably aren't bad but they can sometimes give you clues to other things that have gone wrong. Did you check for spark? Did it have a check engine light or other warning light on the dash before it died and if so do you have a code scanner to see what code was causing it?

It's hard to tell where to begin but that's a good set of questions to start with.