does any one know what this code means? or fix this code?"ignition coil a pramary/secondary malfunction"

 

I can give you an answer if you give me the code number. I cant do much for you if you dont give me the code number. But first guess if you have a 99+ Mustang you have a bad coil. ?they have coil on plug system

 

the code p0351 and its a 96 mustang gt with 2001 heads and intake manifold

 

Each ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM). Its for the ignition primary A. I'd check the first coil pack and see if its junk. try getting some MSD ignition coil packs ( or other brand) and then clearing the codes.

 

well i found a loose wire that connect to the coil and when we move it my car seems to run better but i still dont think it is 300 horsepower

 

Well, then thats most likely youre answer right there.... Where did the 300hp thing come into play?