My CEL came a few days ago. I really didn't pay it too much attention it because I had a new flex pipe welded on... However, I was driving to MA and noticed that my car hesitated twice when i "punched it" I was driving around 55-65 MPH when this happened... Do you think that the CEL and or the CAT is going bad, causing the car to drap/hesitate?
PLEASE advise!?!?!
FYI: I changed the cat out about 6 months ago....

 

you first need to find out what the code for the CEL is. then you will know what is wrong with it. later.

 

hesitation + stalling usually means a dirty / jammed / failing EGR.

get the code read at Autozone or Pepboys and post it back up.