still there

[joe mclennon]

well i replaced the fuel injector on the #7 cylinder thats what the code was and it didnt change anything its still shuddering and popping and backfire any ideas. and it still throws the same code secondary g
circuit coil #7 and fuel injector circuit open #7

 

[smithwessn]

If you have a code for a coil and a fuel injector at the same time I would be looking at that wiring harness pretty closely. Look for damage caused by mice, chaffing, corrosion, etc.