Your car is running to rich meaning it's getting to much gas.
if it tends to sputter and have no power i would suggest the fuel pump. it it is only after the car has warmed up, or a while after you start driving it might be the ignition module.
There could be several reasons why a car would sputter and shut off. The car might be out of gas, dead battery, bad starter, alternator problems or other issues. It is best to have it checked out by a licensed mechanic.
need more info. does it shut down while driving? shut down on decelleration? acceleration? does it sputter or is it like the key was shut off? is there a loss of power before it happens? does it restart right away or do you have to wait , and if so, how long? is the yellow "check engine" light on: Does it stall every ten minutes until it's fully warmed up?
possible the slave cylindar is getting weak. When cold, fluid is thicker, warm it may bleed past easier?
This is because the engine has not yet fully warmed up. The computer increases the idle speed to prevent stalling when the engine is cold. To correct this, wait for the engine to warm up, or shut it off.
Once the truck is shut off it was already "warmed-up." Once it is warmed-up all the heat in the big surface area has to be let go. This is where the fan comes in;the fan lets go of the extra heat buildup inside.
you need to get new spark plug leads
Will a 1995 Toyota Tacoma have same parts as a 1993 SR5?
the hot water valve shut off valve shuts off the hot water. The cold water valve shuts off the cold water. ;()
possibly, blown head gasket, cracked head or cracked block
Don't know how cold your cold is but, it could be water in the fuel system (ice).