1999 ford explorer wont stay running unless i keep my foot on the gas

ford
explorer

#1

i have a 1999 ford explorer that wont stay running unless i keep my foot on the gas i have replaced the fuel pump, the fuel relay and the fuel filter


#2

It’s almost certainly the idle air bypass valve (aka IAC). They get gunked up and stick in the closed position. The replacement parts have a design change that should prevent them from sticking closed.