Every time i put a new muffler on my 1997 jeep grand cherokee the motor bakfires and blows the muffler compleatly apart it dosent do it right away it runs fine for a few miles then boom then it starts to sputter and stalls and wont start until about 10 min. later after the muffler is blown and im driving around loud it dose not backfire no more but every few miles it stalls and wont start and run right for about 10 min. then it starts and runs fine for a while longer beside the noise from having no muffler

http://www.4wd.com/hardparts/HP_PartList.aspx?hpDID=180
you wanted compleat parts list

Your Blower motor is going bad drawing to much amperage if you keep replaceing the fuse you can melt the connector where it plugs into the motor and make it harder to repair because now you have to repiar the wiring. You should also replace the Blower motor resistor when you replace the Blower motor . They work together and somtimes when the blower motor goes bad it damages the resistor internally and fails right after you put the new motor in .

have tour mas sensor checked out

is the timing right.

It is most likely the Ignition Coil overheating, it is probably cracked on t he outer casing somewhere. It could also be the Camshaft Position sensor. I would start with the Ignition Coil. are you getting a problem code.

not sure when a tune may have been done but that is a suggestion and cleaning the throttle body throat with some cleaner.

Most likely cause is the crankshaft sensor.

try recharging the ac

since its a 1997 your jeep has EFI, electronic fuel injection. The most probable reason for your troubles would be the injectors or a problem with the computer controling them, not allowing enough gas to be pushed into the cylinder causing stalling or lack of power, also too much gas iin the cylinder can lead to back firing and stalling. This would also explain the reason it takes so long to start back up some times, all the excess gas in the cylinder is flooding the motor and u have to wait till the gas disipates till the engine will turn over.

timing chain