Refrigerant leak Blown fuse
It could be that the window motor has stopped working.
A defective or out of adjustment brake light switch.
Bad sending unit in tank.
Yes they can, if one or more are either stuck open or not working at all it will cause a misfire.
try the neutral safety switch
It could be, but without checking with a know good gauge you will not know.
The most common problems will be with either the power or the ground going to the the blower motor.................
if the rear ac is working then you probably have a damper door that is inoperative. this is in the heater/evaporator box. so if it isn't working then you will be heating and cooling at the same time out of the heater box.
Because they lost the war
No, under normal circumstances Cherokee's cause "Lead Poisoning" that normally results in death before any effect of a 'heavy metal' (like lead) can cause cancer.
Working out won't cause fever blisters.
Check your fuses. Sometimes a fuse can be the cause of a seemingly difficult problem.