I drive a 2004 Aztec Pontiac and it just shut down while I was driving but it started right back up
Have you checked to see if you still have a muffler or catalytic converter?
Yes I have both
What kind of noise is it? From what you say there it sounds like a major exhaust leak, possibly at the manifold or a hole in the muffler.
Looking for a Used Aztek in your area?
CarGurus has 158 nationwide Aztek listings starting at $1,999.
Search Pontiac Aztek Questions
Pontiac Aztek Experts