Ok so I dont know alot about how to fix cars but my 98 mustang gt is running really bad it backfires loud and when I shift gears it spudders like it doesnt want to go. What could be the problem here im not driving it because I dont want to mess it up further please help I need my mustang back.

 

Perhaps more importantly, do you know how to use tools? I'm more old school, but it could be so many things you might want to have it checked out. Could be as simple as plugs and wires, could be a computer malfunction, could be the pistons are flying out the side of the bock - well, not really the last one, but lord knows with the new stuff. Does the check engine light come on?

Edit: Oops - didn't see you were new - Welcome to TMS!!! You might want to say "hi" in the introductions section. Also I sometimes I play Devil's Grammar Police State Advocate - a little punctuation can go a long way when it comes to understanding what you are trying to relay.

 

Look into easy stuff like a dirty maf or fuel filter. may be a tune up issue but if cleaning the maf or changing the fuel doesn't work you may want to get it scanned to see if you have any pending codes.