my sable has 93000 mi on it owntoplied it 2 weeks it runsd veryhot,idlesbadstopd

What is your question?

uses excessive fuel,(like 15 mpg!) ) from a strongly running engine otherwise.... whenbraked at stoplights she shudders surges in place of idling. oh and she often needs coaxing when restarting if warm. also displays rough idle on cold start thar soon smooths out. but often needs throttle pressure to accomplish smooth out