I have a 2003 Saturn L200 4 cyl. with 221,000 city miles that i've owned since it had 20,000 miles on it. It has alll of a sudden has a hard time maintaining 70 miles p.h. on highway, and exhast noise is load right under our feet. I have tuned it up, replaced the fuel filter, changed the air filter, and I was wonder ing if I should get the catalytic conv. checked.
Jan 14, 2011 at 3:30 AM