I have a 99 subaru legacy outback wagon. its a v4 2.2L. When i begin driving everything is fine for about 10 minutes then the mph hand will start going all over the place and the odometer will turn about 20 miles into just 1. The 2 of them are connected to each other so im thinking there must be a short or something. Everything else on my instrument panel works perfect. Also im not sure if this is connected but when im in 5th gear and am slowing down when i push in th clutch and the brakes the car usually will die. It also does this sometimes when Im down shifting. Any info will help im sure as i am currently lost on this. thank you