Hello my name is Zach and I have 89 foxbody 5.0 automatic just picked up a couple months ago and I've been driving it daily ever since with minor issue the engine burns a little oil and water pump leaks a little water but the other day I was letting it warm up and i heard the engine turn off. Started it back up and it's constantly searching for the right idle. I pulled the plugs and they're cover in oil/fuel so I do a basic tune up plugs, wires, cap, rotor and ignition module on the front of the distributor it seemed to help because the car no longer dies but still searches for idle. I checked fuel pressure and it's at 34-39 psi depending on if I rev the engine up. I went ahead and replaced the fuel pressure regulator since it was the original regulator. I had to pull the intake manifold to do so I replaced both throttle body gaskets and the upper intake gasket I also replaced all the injector o-rings and one injector cap that was broken. Also checked ignition timing and reset it just to be sure and still no change engine still hunts for idle but no popping or back firing when I snap the throttle. I have a 4 wire maf sensor and I have good power and ground and signal wire to and from the sensor and when I measure the voltage coming out the maf sensor with the engine running its 1.1 - 3v (I think that was wide open throttle but I was working alone and couldn't see the gauges from the engine bay) the voltage then steadily climbs down and steadies off at 1.2 at an idle. I pulled the IAC motor off and made sure the plunger isn't sticking there is a little bit of carbon built up on it but the plunger moves freely and so does the little motor and when the IAC is unplugged with the engine running it immediately stalls out. Also when the MAF sensor is unplugged the idle gets very choppy so I believe both of those work but I didn't actually measure the voltage coming in and out of the IAC. I assumed because the engine burns oil that maybe the 02 sensors are fowled out so I pulled those out and they're not wet but definitly have a good coating of suit on them. So I plan on replacing them in the morning when the parts store opens just for good measure plus I plan on keeping the car for a long time so I'm not too bothered by replacing parts that could be failing even if they're not the root cause of the problem. Just wondering if anyone has run into a similar problem like this and what they did to fix it. Also the ignition timing is where it has been for the past two months I've been driving it and I never pulled the distributor but I marked it before replacing the ignition module on the front because I had to turn it in order to remove the little set screws. I have a code reader and after i change the 02 sensors in the morning I'm gonna pull codes with it running. Any suggestions as to where to go from here would be greatly appreciated