my car ran real rich due to an eshaust leak fixed it but still running rich but not as much , could my oxygen sensor have gone bad since i was running it when it ran super rich ? and also im getting a code 42 " ESC module" anyone know how to fix that on an 88 lo3?

 

i do know o2 sensors can't take much abuse. So it could be faultered. on for the module i don't have mine hooked up its carb'd don't knwo much about that.

 

check and see if your knock sensor is even plugged in. an open in the knock sensor to ecm circuit can throw code 42. it happened to my 92 rs.

 

ok i will check that , but also the black and gray connectors that clip onto my ignition coil are broken and become loose from time to tim , can this be setting off a code 42?