Hey fellas. It's the first time I have driven my truck in the rain and noticed that I lose a lot of power when I'm driving it. It happens when I am driving against the rain but when I come to a stop, it runs fine. Happens in first, second, and third gear. It runs fine every time when is shines but when it pours, it runs poor. Truck is all stock, no aftermarket parts and running a 22RE engine 5 speed. Please help!

 

Put some water in a spray bottle and spray your ignition wires/coil when its running. If you see electricity jumping around, replace them.

Depending on how old things are, I would just do a tune up. Plugs, wires, cap rotor and air filter.