Why is my 2009 ford flex shaking after spark plugs were changed?

After doing a tune up on my 2009 ford flex, the car started shaking and the AC does not cool. What could be the problem? I used OE motorcraft spark plugs

It sounds like you swapped some spark plug wires around or did not check the spark gap on the plugs. You may have knocked a wire loose going to the A/C compressor.