P0171

Hello, My car is like groundhog day with Bill Murray. Every morning I drive to work 10 miles on the highway. As I hit the the red light…it sputter and stalls. I start it and no problem off we go. This is the ONLY time it stalls during the day.This is EVERY DAY lol. Now it has thrown at times a P0171 lean code doing this so I can assume this is the problem. Once in awhile it throws a P0420 that the CAT might be acting up when on the HWY.. So far I have cleaned the throttle, checked for cracks at the accordion hose going from the throttle to the air filter box. I have changed the air filter. I h

Since it i time to change plugs, change them now and see if it stops stalling. Check for vacuum leaks.

CHECK ENGINE LIGHT CAME ON AND THE PERFORMANCE OF THE VEHICLE IS BAD. BAD IDLE, WEAK ENGINE, JUST THE CAR IS NOT PERFORMING PROPERLY. I USED THE SCANNER TO SEE THE CODE AND I HAD MORE THAN ONE . P0171 P0505 P117B P0441 P0455 . FUEL/AIR MIXTURE IS LEAN . AND I HEAR THE FUEL PUMP MAKING THAT NOISE THAT INDICATES A BAD FUEL PUMP. IT'S WHEN I PUT THE KEY IN I HEAR IT LOUD ENOUGH AND IF I TURN THE KEY ON IT DOES IT AGAIN. WHEN I PUT IT ON P IT REVS AND RPM GOES UP AND THEN COMES DOWN, UP AGAIN DOWN AGAIN ... WHEN STOPPED AT A RED LIGHT THE CAR WANTS TO MOVE AND RPM KEEPS SHAKING. *TR

연비 경고등, 산소센서 P0171 코드

업스트림 O2 센서(공연비 센서) 교체. 에어 인테이크 청소. 연료 트림 모니터링.