I have a 2008 dodge charger se. I try to start it and it wont start in park. I place it in neutral and it takes a few times to finally get it to crank. I replace the solenoid relay already and reset the computer by unplugging the battery. What is the problem with it?

The Neutral safety switch in the Transmission is the problem. If it doesn't send the signal to the computer when it is in park it won't crank over. Replace the Neutral safety switch and the problem should be resolved. Make sure you check the linkage for proper adjustment if you have a center console shift. That doesn't actually connect directly to the transmission except through a linkage and it may show to be in park but not actually be fully engaging in park. Sometimes you can turn the lower part of the steering column by hand to get it to lock fully in park if this is the case with your situation then for sure it is the linkage being out of adjustment.