can some one help me, my mustang wont start, it turns slow and seems like its gona start but it dont, it has new battery and i already checked the starter and it is good.
Can you hear your fuel pump when the key is turned. If you don 't hear the pump come on it could be your fuel pump or the relay. also check your coil or the TFI module because if one of those are bad it could cause the same problems that you are having.
It turns over slower than normal but you have spark? If you know the battery is good, consider that the battery cables, starter cable, or motor grounds are deficient, or that the starter itself is going south.
There are two components to starting and that's spark and fuel. Check to see if you're getting spark and if you are check your fuel delivery ie fuel pump or relay. If you're not it's something in your ignition.
If it's cranking slow then perhaps you do have a bad ground or cable. Did you by anyway "play" with timing? If its too advanced it will cause same symptoms.