NineFour5.0

Okay i know alot of you guys get annoyed buy guys that have no clue whats going on but i really need help and im tryin my hardest to learn . lol. so i have a 1995 mustang gt 5 speed, and it was running great up until recently, it feels really weak, it doesnt feel like its running on all cylinders and after driving around for a while, when it gets hot the speedometer goes haywire and the car will eventually turn off, i checked the cap and rotor and there is carbon build up, could this be the issue or anything else?

AdderMk2

what have you done to the car recently

NineFour5.0

i havent put anything on the car yet its still completely stock, the only thing ive done is put a new thermostat and my heater core went out and i did the bypass on it, but that all was about a month ago, this problem just started and its getting worse everytime i drive it.

NineFour5.0

ok changed cap and rotor to the msd setup and no change ..

nitrous_bob

look for melted plug wires on the headers....and your t-stat ? did it have a check ball in it ? or did you just get a 302 t-stat ?