I had a car that would not accelerate, I could smell burning, and it ran hot. When I got it home, I popped the hood and saw red hot exhaust manifolds. My problem was a clogged catalytic converter. The car had 130K miles on it when this happened. You may want to check this out.

Good Luck,
Phil

Never hold your farts in. They travel up your spine and into your brain...that is where crappy ideas come from.