Not idleing correctly

Hey guys Ive got a 94 yota 2wd 4cyl, and when i started the truck this morning it ran fine for about two minutes and then the idle just dropped real like like it almost died and then it went back to regular idle it did this about for about ten minutes and then just stopped. It has done this everyday for about a week. I dont have a tach on it so i cant give specific Rpms for you, any help would be great .

might be the TPC(throttle position sensor) or the IAC(intake air sensor).Go getcha a haynes manual.

Check the LAC (auxiliary air regulator),if fails too close,causes fast idle, if fails too open, won't idle when cold!Check for 12volts with key on.

Ive got a haynes manual, thanks ill check em both !