So about a year ago, my 1st speed of the 4 speed switch for my ac/heat decided to stop working. 6 months later, my 2nd speed decided to stop working. The 3rd and 4th speed are at the same pressure as normal, and haven't lost any oomph. Yesterday the directional switch decided to go out on me. Luckily it is stuck in the defrost position, so I can defrost my windows in the morning. The ac/heat switch is working just fine. Any suggestions?