So I am driving on the PA turnpike last night in a nice driving rain, when all of a sudden, my wipers start acting funny. At first, the start doing a pattern of 3 quick wipes, then stay off for a few seconds then another 3 quick wipes. Then they stop completely for a couple minutes... Meanwhile, I am doing like 75-80 trying to keep up with traffic (

) with no windshield wipers and its starting to get hard to see (my rain X hasn't ben re-applied in a while)... So then I make it to the toll booth and they kick on again, working fine for a little, then doing the same 3 quick swipe/off pattern again... Then they stop again for a long time. I get gasoline and when I turn the car back on, they work fine, but then eventually stop again before I get home...
My question is, is it the motor or the computer? When they would go off, moving the position of the steering wheel stick did not affect them. They still did not work.
Any suggestions, or others that have experienced this?