It started with surges and stalls and loss of fuel economy. Changed O2 sensor, EGR, Fuel injectors, all at mechanics recommendation. Now it is hard to start once engin is at operating temperature. Went back to mechanic and he changed a couple of vacuum hoses and cleaned the throttle position sensor. Didn''t notice a difference, but he said that everything was good and I shouldn''t be having any problems.One month later of using starting fluid in the must start scenarios I am getting fluxes in the voltage that blow the headlight bulbs but not the fuse. My check transmission light is going on and off and the tranny is slipping. Any ideas would be appreciated.