Code 33 after Code 22
 

Hi All, recently I've been getting a code 22 and my idle just drops til the point of almost stalling if it didnt stall already. it only happens when I'm im slowing down, and also when driving in a hwy when I let go the gas pedal, once I press it again it goes away. the car only shakes when slowing down to a stop, then thats when I usually get the code 33, I'm assuming because the idle is so low that vacuum drops dramactally that it triggers the code 33. does anyone have any suggestions on code 22? the TPS sensor is kinda of new, I got it this past feburary when i first saw the code, after a couple of months I started getting that code 22 again and now im stumped. any help will be greatly appreciated.