1998 Dodge Dakota

Hi there,

I have a 1998 dodge dakota and its been running fine until today. Its about 85 dagrees out right now so the heat might be the problem, but Id like to make sure. I made a stop on a hill light, 1st-2nd-3rd- into 4th it started shaking and there was a burning plastic smell. Like bur---bur----bur---bur the "---" where it was shaking. So I pulled it over and turned it off, and back on. It did the same thing only it was doing it in 2nd gear. I had it towed home. Am I looking at a pulley problem or something completely different?