87 Ford Ranger won't stay running

I have a 1987 Ford Ranger XLT 2.9L 6 Cyl. When I start the engine, it starts then it idols down and stalls out. I have to rev it up for about 5 minutes and when it does stay running, when I get on the road and stop at a light, it stalls out again! I am thinking it's the computer. Can anyone help me with what is going on here and how to fix this problem. There are several other Ranger owners with the same problem and they don't have a clue on how to fix it.

I have a 1987 Ford Ranger XLT 2.9L 6 Cyl. When I start the engine, it starts then it idols down and stalls out. I have to rev it up for about 5 minutes and when it does stay running, when I get on the road and stop at a light, it stalls out again! I am thinking it's the computer. Can anyone help me with what is going on here and how to fix this problem. There are several other Ranger owners with the same problem and they don't have a clue on how to fix it.

The problem is in the vacuum hoses. (EGR solenoid switch).

Replace "Map Sensor" everything works fine now!

you know, i was gettin ready to post a question similar to yours, cuz sometimes when i accelerate fast the engine stutters and sounds like its gonna die. thanks for puttin in the clues to the map sensor.