9 91stangBoiLX New Member Mar 1, 2012 3 0 1 Apr 28, 2012 #1 Apr 28, 2012 #1 I have a 91 mustang lx an the check engine light is on I plugged it in an it comes up multiple mis-fire so I replaced plugs,wires,coils at its still mis-firing wat else can I do to fix the problem any suggestions please let me know
I have a 91 mustang lx an the check engine light is on I plugged it in an it comes up multiple mis-fire so I replaced plugs,wires,coils at its still mis-firing wat else can I do to fix the problem any suggestions please let me know