solo_ryder

my mustang is making a bwierd nosie from the exhaust on drivers side no one put anything in my exhaust but its a busing sound i guess can anyone help
all connections are tight in the exhaust but u can hear it from the tail pipe and i'm getting bad gas mileage

jwarner0297

busing???? it could be the catylitic converter but you should have engine light from rear 02 sensor

solo_ryder

no check engine light or any codes when i scan it , i just can't figure it out i'm normally not stumped just wondering if any one else has had this problem it also misses at idle

Obsequious1

I HAD MY CAT BREAK WHILE DRIVING IN MY OLD RANGER. NO CEL CAME ON. CHECK YOUR SPARK PLUGS. ONE OF MINE BACKED OUT NOT TOO LONG AGO AND BEFORE IT DID, IT SOUNDED LIKE SOMETHING WAS RATTLING INSIDE MY EXHAUST.