I read somewhere recently that there are 2 selonoids that have filters in them and that they should be cleaned. I've already cleaned the EVR filter, the EGR, and the idle control valve. Are they the 2 selonoids mounted on the passenger side right next to the voltage regulator and coil? Or are they the 2 right behind the air intake plenum? If there is a dirty filter I'd sure like to clean them.