I own a 03 Chevy Suburban 4WD 5.3 liter. About a year ago. Fuel pump quit and was replaced. Since then during start up in cold weather vehicle runs and idles rough…sometimes it will stall…After vehicle warms, runs fine. I have replaced the spark plugs, spark plug wires, and Mass Air Flow senor. I recently purchased a code reader which gave me the following codes P0171- System too lean (Bank1) and Po174- System too lean (Bank 2). Has anybody had the same problem?
have the same problem?
Monday, March 14th, 2011 AT 6:58 PM