Can't Figure it out
1998 Ranger, 3.0 5 speed
I am having idle and throttle issues.
Truck idles rough at about 700rpm, sometimes almost stalls out and then picks up to 1500 rpm. Other times it will stall out.
I have replaced 02 sensors, MAF sensor, Idle Air Control Valve, EGR and Spark Plug wires.
I have unplugged the IAC Valve and hardly notice a difference, but it's hard to start unplugged. Plug it back in, start the truck, idles rough, I give it gas and can smell the gas, I unplug the IAC and then it smoothes out eventually and will run. Also, checked voltage to IAC.
What's the deal?