i was at a stop and the car started to get to the 200 mark b4 the fan kicked on and the car started to run very rough and as i left the stop the car kept missing and hesitating to get power this was only for a few seconds then it was normal so i make a quick stop and shut car off restart and it runs sluggish again mind i note the car is still hot but as im traveling i get to another light and as i accelerate the car starts stumbeling and backfiring and has no power its just popping when i press the throttle down but it only did it for a few seconds then it ran normal the car since i baught it has had random misses here and there for a few seconds it does it randomly theres no set temp , condition , water or heat it stumbles when the throttle is pressed , so far ive changed the fuel filter , cap and rotor , cleaned the intake , it sat in a barn for 2.5 years with stale gas no stabil , ive been doing treatments at every fill up it does have little bit of trouble starting HOT

 

You should consider pulling the spark plugs out and checking them for wear, proper gap, and signs of fouling. Sometimes when the motor sits up for extended periods of time with out being started, the natural build up of debris on the electrode gets spongy and can cause intermitent miss fires, poor spark strength, or even corode the tip to the point that it begins to break up. Also check the EGR, it could have developed a dirty ring around the diaphram, making it want to intermittantly stick, and of course check all the vacuum lines for signs of cracking at connection points and bends, a little vacuum leak can mess with the emmision equipment in odd ways.

 

Is the check engine light coming on? If not, then I'd start re-checking the ignition components and vacuum lines as suggested above. If the light is on, use the paperclip between the a and b terminals to get the code(s) and then call your local autoparts store for interpretation or a manual if you have one.

 

Get a fuel pressure gage on it, preferably one you can watch while you drive. Stale gas could have plugged the fuel pick-up sock, or killed the fuel pump. Could also have done unkind things to the rest of the fuel system (regulator, injectors).