i messed up

and i don't yet know how much its gonna cost me.  i bought the van primarily b/c of its outward appearance and how it drove.  but on the inside it has important sensors that do not work that i did not notice and the exhaust system is rusted.  i was aware that i needed a new muffler, but the mechanic says i will need to replace more than that. 
this van is my h.  it looked good on the outside and i didn't so enought research to find out the complete nature.
im still hoping for the best.  hoping that i will have enough money to do the work.  that the car will continue to be useful until and after i get the work done. 
i am trying to be forgiving of myself lest i get 2 down. the fault is mine.  i was in too much of a rush.  the lesson is to not do that.  i ws concerned that id miss the deal.  that someone else wld buy the car b4 i cld do all my research.  and i then moved too quickly.
Naima plz learn patience.  this hs been an issue all of my life.