I need help heres the issue. Whenever it rains my jeep will stall out once. I can get it started back up it runs real low rpms for a few seconds revs back up and is fine for the rest of the day. Also the temperature gauge will peg below 100 like its not working at all. If I catch it stalling I can keep it running by revving it and after a minute or so it returns to normal, This only happens when it gets wet. What sensor could be causing this?

 

How old are your spark plugs?

Ever cleaned your throttle body?
Any engine codes flashing on dash via the Check Engine light?

 

My guess is the distributor cap has a crack or the insulation on the plug wires are defective.
Time for a tune up.

 

Distributorless.

None the less, basic maintenance needs to be addressed.