I have a 1996 Ford Explorer 2WD 5.0 EFI with 205000 miles on it. I have 2 trouble codes displayed I retrieved P0171 and P0174. They are Lean bank 1 and Lean bank 2. Symptions are it is difficult to start cold in morning it has to be cranked over a few times before it fires up. When it is warm it starts easier. Idle is fairly smooth for a motors with this many miles. I replaced the vacuum hoses and PVC valve reset the light and it came back on after I cycled the engine the appropriate number of times. I also used some MAF cleaner and sprayed in the port where the sensor is located in the throttle body. I don't know where to go from here I don't want to start changing parts because that gets expense quick. I need the steps to trouble shoot these codes the chilton manuel does not have that kind of help.
Thursday, November 2nd, 2006 AT 2:36 PM