1994 E320
 

I took my car recently to the mechanic and he changed all six spark plugs, spark plug wiring, air intake sensor, oxygen sensor, and the gas pressure regulator. Now after all of these changed, every time i came to a stop sign the car would turn off on rainy days. when sunny the car would work fine and now it is running rough and sortof the engine is shaking. Can somebody help me out because i keep spending money and im not getting anywhere with my problem... Thanks in advance :)