i had an incident recently where my cats failed on the drivers side due to what i now think was a blown head gasket. the middle cat got so hot it melted the paint on the bottom of the car! i gutted the cats and then the engine went out. i made a thread about it because the car was so slow and the fine details of the story are in the thread.
http://www.stangnet.com/mustang-forums/threads/my-mustang-is-slow.855791/page-3#post-8614828
i purchased a new engine because the old one started knocking. now it has a problem where its dying on startup and throwing the codes 1130 and 1131 for the front o2 sensors apparently reading lean. i suspect the egr is stuck, a vacuum leak, or ?..
http://www.stangnet.com/mustang-forums/threads/my-mustang-is-slow.855791/page-3#post-8614828
i purchased a new engine because the old one started knocking. now it has a problem where its dying on startup and throwing the codes 1130 and 1131 for the front o2 sensors apparently reading lean. i suspect the egr is stuck, a vacuum leak, or ?..