Car Stall problems of the 2010 Ford Transit Connect

It was April 2016 when my car started running erratically (lose power, add power) and I instantly took it in. It was diagnosed with "rusty" plugs and coil; replaced for $845 and at 33,310 miles. Next time I drove it, rough, and high then low power. It "drove" itself, surging at a high rate of speed, then stalling. Very scary. The dealer's diagnosis? the windshield washer nozzle gaskets had not been installed, so they "leaked" downhill onto the engine. Apparently, Ford knew or came to know this was a problem with many tcs, but they chose not to inform buyers. The gaskets cost $69. 50. Without this knowledge and having improperly installed gaskets, I paid $845. 15 plus $971. 13. At 33,402 miles. Yes it ticks me off; I am a disabled senior and I need this car for my dogs and my disability scooter. Boo on Ford. And indeed, when I was pointed uphill parking in a parking lot, my car surged - headed straight for a car. Thank goodness I was headed uphill and was able to stop the vehicle . . . After having paid $845. 15 before realizing the problem was not fixed and adding the additional $971. 13 beginning the next day. (if anyone needs them I can take docs to store to scan and upload. ).