I've got an 02 ranger 4.0 sohc that has a stalling problem with no codes. I have replaced the IAC and the TPS cleaned the MAF and searched for vacuum leaks, Ford said the computer needed to be updated so I had them do it, no luck still stalls. when ice cold the truck will start and run fine after it worms up a bit it starts to stall also stalls wile driving an jumping gears. This is driving me crazy so any help would be great.