hello, i am in nebraska with my dad because has some business to do down here and his dodge caravan is missing firing or something along those lines. when i turn the key it its making a chugging noise and you have to turn it over about 3 times before it will start and on the third try you have to hold it down to get it to start. once you start it then nothing works speedometer wont work or will the tach. gotta go 4 hours today on all highway. let me know if you guys have any ideas that i can do for it before we take off. thanks.