Hey guys, I've got an 86 Mitsubishi Mighty Max Pickup v4 2.0 2wd.

After I take it on the freeway and get it warmed up pretty hot or just drive on the street for about 10 miles, my truck starts to idle roughly and it acts as if it's about to die. So I have to put it in neutral at red lights and press the gas to keep it from dying.

I tried using carburetor cleaner and it worked for a week but then the problem happened again.


What could it be and how can I fix it?