I have a 2003 Ram 1500 4X4 SLT 4.7 and every time it rains my truck will stall and buck along with a rough idle. What could be causing this?

Asked by May 10, 2014 at 06:38 PM about the 2003 Dodge Ram 1500 SLT 4WD Quad Cab SB

Question type: Maintenance & Repair

It will only idle rough and stall/buck/jerk when it rains, or more precisely (when it is a
humid rainy day) if that makes sense. After a couple of days the check engine light will go
off and the truck will run fine. However from time to time my truck idles a little rough but
nothing like when it rains, there's no bucking or jerking. Anyone every have this sort of
problem.

4 Answers

115,915

Next time it happens open the hood in the dark of night and look for spark jump. (No light what so ever shining on engine) Look around the plug wires, coil and distr cap. I feel that you will see lots of blue sparks jumping from the wires. Kind of pretty but it will run like crap. Lol. Might see a little of it when the humidity is low and not raining but when humidity is up or it's raining it will jump spark like crazy. If you see it replace the items it's jumping from( plug wires, dist cap, coil, ect)

1 of 1 people found this helpful.
385

Or just grab the each wire and get shocked

I have a 03 Dodge Ram 1500 down in the top of the Intec water can bypass down through to your spark plugs make it run rough I change the O-rings on my coil pack keep out water from getting to the plugs that's not good

I have a 03 Dodge Ram 1500 on in the top of the Intec water can bypass down through to your spark plugs make it run rough I change the O-rings on my coil pack keep out water from getting to the spark plugs that's can happen when you get water up there on the intek maybe washing the engine all rainy days splatter up there in the intake that gets down to the spark plug because they are down from the top of the Intec

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