I recently got a '90 ram 150 318/auto that was originally my grandfathers. The past few days in the 100 degree temps, the truck will start to not idle and you have to stay on the gas and two foot it to keep it running. The first time it did it, a storm cut through the area and lowered the temps and it started running fine. Today though it did it again and even after letting it sit close to a hour it still did it. Once it started doing it if I floored it, it would bog down then pop back through the exhaust and pick up again or die. Anytime I let off the gas it would stumble and either bog when I gave it gas or start running fine until I let off again. Anyone have any ideas?
It has the maintenance required light on and I ran the codes, but they don't seem to match up to our codes except for what I assume is the oxygen sensor. I'll have to find where I wrote them down.