idle problem

[Jamesbradley]

I have a 97 ford explorer and I have an idle problem and I can't figure it out. It will start and run fine but if you put it in reverse the RPMs drop to 500 and if you tap the gas it drops more and spits and dies.... I have tried to adjust the idle and nothing... need some help and thing is appreciated

 

[swshawaii]

OHV, SOHC, or 5.0 V8? Whichever one, search idle air control (IAC) valve cleaning. BTW, idle is electronically controlled.