1990 JEEP CHEROKEE 4.0L I6.....so driving home last night and the engine shuts down a block from my house. I tried to start it but no luck. This morning I went out to mess with it fuel system is good so ruled that out, moved on to the plugs no pewer...the cap, plug wires and rotor were kind of old so I went ahead and replaced them still no power. went a head n checked the coil with a plug tester light was kind of faint so I replaced it with a new one I had laying around still no luck so thers power goin into the dist cap but no power coming out....so now Im stuck please help...thanks sorry for the long post.