okay so the problem started after swaping out my 94 D16Z6 and putting in a 92 D16Z6 no every once and a while the tac will jump between 1 and 2 grand ill hit the accelurater and it goes back to normal. Im not really worried about the code im doing the easieast first undo the battery well the check engine light came back on so now the fuel filter but what should i do next if that dont work O2 or fuel pump? I would be very apperciative of the help on the idle problem thanks

 

some help please

 

anytime i fixed a code 43 its been a o2 sensor