This is not a car worth saving.
Lets pretend your current jeep does not even exists and you buy a Civic for $10,000. 10k will get you a very reliable Civic that might even last you after a 3 year residency.
Estimation: If you finance it for 5 years and with interest the total might come out to $12k over 5 years. Each year it is $2,400. Every school budget is different and the location where is it located. In my case, I can take out extra $2,400/YEAR and still be under the schools budget of $80k/year.
I do not know where you will be attending next year but if you are driving to school and city transportation is not reliable, the last thing you want in the morning of your exam is to have your car break down and be late or even miss the exam!