Hello everyone. I have a 2002 ranger xlt 4x4 with a 3.0. I have had a mis that I can't find a cause for that gets more confusing every day. So far I have replaced: injectors,coil, cam position, crank position, tps, iac, maf, temp control, battery etc and it still has a bad mis with no check engine light. Last thing I changed was the temp sensor and now it will hardly start and the ac quit working. Fuel pressure is good. I did a smoke check and there are no vacuum leaks. Also replaced the plugs and fuel filter. Any help I would greatly appreciate it.