engine rpm fluctuating

[DMOORE]

I have recently acquired a 1994 explorer and am experiencing engine rpm fluctuation could this be caused by a defective vent tube on the filler neck, I had gas spilled out under the car on the first fillup.

 

[Gadget X]

I just gave you a couple of suggestions on the other thread you started. Better to not post the same thread multiple times, you will get better responses.