I have an 08 Mustang GT all stock besides the radio. It had problems holding a battery charge, replaced the battery. Then while driving the radio and dash lights would go dim and brighten back up, the battery gage would jump form high to low. I change the alternator, fixed most of the issues. But if you accelerated to quickly like getting on a highway it would shut the dash down until you let go of the gas. Now the car will not start. It will turn on but wont turn over. It does not read the...

Could the PCM be bad?