WHEN VEHICLE STARTS UP IN MORNING IT HAS A ROUGH IDLE. IT WILL JUMP UP OVER 2000 RPM THEN DOWN TO ALMOST STALL ,THEN BACK UP AGAIN, IT WILL DO THIS FOR A COUPLE OF MINUTES.ALSO THE ENGINE LIGHT IS ON,PUT CODE SCANNER ON IT TO READ CODES IT COMES UP P0171 TOO LEAN BANK 1 & P0174 TOO LEAN BANK 2. CHANGE BOTH UPSTREAM SENSORS & 1 OF THE DOWN STREAM SENSORS. LIGHT STAYED OFF FOR THREE DAYS & KNOW IS BACK ON,CHECKED THE CODES& COMES UP WITH THE SAME CODES AGAIN.IT IS GOING THROUGH ALOT OF GAS, BUT IT RUNS VERY WELL,ANY IDEAS???
Jan 22, 2010 at 6:41 AM