my 89 ranger 2.9 is having trouble staying running,when i start it up,i have to keep my foot on the gas and above an average 2000 RPM's until it warms up or else it will die.it puffs some black smoke and has a coughy shaky idle.I've already replaced 2 of the sensors, the tps, and the iac.
while searching this forum, i found a couple posts mentioning replacing the iac, maybe my replacement was bad? i got it from a junkyard, so its a possibility...
before it was parked, it burned waaaaay more gas than normal, it had new plugs, cap rotor, coil, all that is good. did i just end up with a bad sensor? time to try again, lol?