Hi everyone!! I just bought my son a new (to us) 2005 Explorer XLS. I have owned a 91 sport that I bought used w/159,000 in 2003 and sold in 2005 w/189,000 and had no major problems. I then bought a 2000 Explorer in 1/2007 w/163,000 and dumped a load of money into and continuously had something...