Ok guys really need some help. I have a 92 toyota pick up 22re. Last few weeks a problem started. I will start the truck and it will start stuttering then stall out, but if I keep it at about 2000 rmp it will stay running. So I have to start it and push down on the gas right away and keep it a 2000 rmp. As soon as I let off it stalls right out. I have checked / changed alternator, checked the distributer spark plugs wires air filter and I am at a loss. So any help would be great. Thanks in advance.