I turned the key one day on my car and i heard a loud grinding noice. So i thought the starter was going bad, because it was an old starter, so i replaced it. But that didn't solve the problem so i decided to shim it, i bought the one that Help makes. and that still didn't work. So i replaced the flywheel and it still grindes. Could it be that i do not have a good ground or a bad battery? i have tried everything maybe u can help.