Jeep just dies!?!?

Well here's the deal I have an '89 cherokee most driven by my better half in the last week or so it has been idling pretty high oh... around 1000 to 1500rpm or so It also is have issues with the charging system am only reading 8 to 10 volts when it should be about 14 so I am assuming altenator. So here is the question part could it be the MAP sensor for the idle or something else? Anyone one with ideas info? Thanks

tps can cause high idle can be tested with a meter ...had tha same problem high idle it would die for no reason drove me nuts found out it ws ht idlerstepper motor i think is is called next to the tps too the old motor out cleand the carbon out of the throttle body and put the new one in no more stalling haynes and chilton manuels address the swap out good luck