ok so as i posted in my intro , im am not a mechanic but , I will work on my truck if i am giving a direction to go so here is my problem.
the truck is a 1987 v6 4x4
the truck Idles at about 1700 rpms and after about 30 seconds it will dip down to about 1500 and then a half a second later go right back up . now I did pull the MAF and cleaned it making sure not to touch or damage the wires and I reinstalled it .. did nothing problem still there.
then I replaced every vacuum line , problem still there.
checked the ecu code. it gave me code 12 the MAF i rest the computer and started the truck. now it idles at 2000 rpm . and the computer is now telling me the coolant temp sensor code 13.
I also did some diggin around on line and someone said it might be the idle control valve. problem is I can't find it to replace it . Im at a loss
please someone tell me what the hell im doing wrong , I really like this truck but i have no idea where to start.