Ok. I have a 1999 ram 1500 with the 5.2 in it. Has a very hard start on humid mornings. Also will big down and act like it wants to die when it is wet outside. So far I have changed the cap and rotor, plugs, wires and coil. Not sure where else to look. I have also poured a good 10 cups of water on everything and it runs fine.

 

Use a spray bottle, and spray a mist around in the engine compartment. Don't forget the pcm...... see what happens. (doing it at night will make any bad ignition parts patently obvious. The light show can be spectacular. )

 

Just went out and tried that

I may have seen one very small spark around the front driver side wire but that is all. I forgot to mention that it will start to act up when I am driving in snow as well or while I am plowing. If I slowly get on the pedal it will come out and run fine.

 

Wonder if you have a sensor going belly up..... Getting any codes??

 

What sensor night you be thinking went out today and started right up. Once I hit 45 It acted like it wanted to lose power and popped a couple times under the hood

 

Unplug the front O2 sensor, see if it runs any better. If it doesn't, remove it from the exhaust system completely, and try again.

 

I have thrown a p0132 code I believe is what it is. I looked and the new o2sensor is just wired direct with but connectors. Do you know where I can get a wiring diagram and a harness

 

Service manual available here. Wiring diagrams are in section 8W.

These guys look promising for the correct connectors.