I just changed my timing belt with no issues . I have drove about 500 miles since and everything is running well no weird noises, nothing . But I have noticed a burning smell after my 30 min work commute. I think my serpentine belt tensioner is not tight enough and may be causing some slippage but I'm still trouble shooting. Here's a pic of my tensioning marks, any tips? You can see that the tensioner mark is on about the middle line.

 

I've seen the timing belt get out of position and try and cut it's way through the plastic timing belt cover.

It can also be a bad bearing on an idler, and the plastic wheel is melting from the heat. Carefully see if anything in that area is too hot.

Chip H.

 

Could also be some coolant or something on the manifold from when the work was being done is burning off. Keep an eye on it.