I let the car sit for about a week and then I went out to the car just a couple minutes ago and it cranked up and ran fine for a few mins and it quit. But the tach still sits on 7k and won;t move and im fixing to take it to the shop so what could the possible problems so I can figure out the price. I talked to the mech and he told me that it was either the plugs or they were getting wet. But another thing could be the ignition so what figure am I looking at spending. This is going to be on a 2.8 v6 MPI