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  1. Eugenia Bermudez

    P0171 1997 Ford Expedition

    Thank you all for the input. I'll get a pressure test kit and give it a go. I'll keep you posted. I'll do that also Tommie.
  2. Eugenia Bermudez

    P0171 1997 Ford Expedition

    Update. I'm at my wit's end. Now it seems like my truck has a coolant leak somewhere and I used a camera to try and locate it at the back passenger side of the engine. I couldn't see where the leak is but after running it then shutting it off I could hear it. Heater core? Coolant bypass tube...
  3. Eugenia Bermudez

    P0171 1997 Ford Expedition

    I just want to thank all of you who have responded and offered great advice about repairing my 1997 Ford Expedition 5.4l 4x4, and not treating me like some dumb girl. I'm not a certified auto mechanic but I have done plenty of repairs on several makes and models and am willing to learn more. And...
  4. Eugenia Bermudez

    P0171 1997 Ford Expedition

    Oh yeah, the shop mechanic told me he did another smoke test after he replaced the fuel pump and said there were no leaks. We'll see.
  5. Eugenia Bermudez

    P0171 1997 Ford Expedition

    The shop that replaced the fuel pump and EGR preformed a smoke test on it when the found the EGR was bad. they replaced it and then after driving it 140 miles check engine light came on P0171 thats when they said it was the fuel pump. they replaced it i drove it for a few miles and it was losing...
  6. Eugenia Bermudez

    Coolant Outlet Tube

    Got my expedition back from the shop where they replaced the fuel pump. Ran good for a few miles then started loosing power and running like crap, worse than before. Took the advice to have the alternator and battery checked except that i just took out the battery and removed the alternator to...
  7. Eugenia Bermudez

    P0171 1997 Ford Expedition

    I just want add that when my 1997 Ford Expedition had first had the check engine light on and codes, I called my local Ford dealership here in Eureka, CA and spoke to the technition about the check engine light and codes wanting to make an appointment for diagnostics and repair he told me he...
  8. Eugenia Bermudez

    P0171 1997 Ford Expedition

    This is what has been replaced and each time something was replaced it drove a little better then it started losing power again and hundreds of dollars no a couple thousand dollars later and I'm at wit's end. MAF, purge valve, purge solenoid, PCV valve. Codes were cleared. Took it to another...
  9. Eugenia Bermudez

    P0171 1997 Ford Expedition

    The fuel pump was replaced. Drove fine first few miles then it started losing power again. I drove it home and put in park and let it idle. I happened to turn on the heater and that really made it bog down. Went through each setting on the heater and AC and it seemed like each setting sucked the...
  10. Eugenia Bermudez

    P0171 1997 Ford Expedition

    It's in the shop now having the fuel pump replaced. I love my Ford Expedition 4wd it's all I ever wanted in a vehicle, I don't mind that it is a v8 and burns more gas than a smaller vehicle. I love fishing and it will take me where I want to go.
  11. Eugenia Bermudez

    P0171 1997 Ford Expedition

    So I took it to another mechanic and he said it's a bad fuel pump. Says it drops to 25psi under load.
  12. Eugenia Bermudez

    P0171 1997 Ford Expedition

    When the check engine light came on the first time it had three codes P0171, P0174I, P0455 I took it to a shop and they replaced the MAF sensor and the mechanic cleared the codes and told me to let me know if that worked after driving it a while. I drove it and it was still not running right so...
  13. Eugenia Bermudez

    P0171 1997 Ford Expedition

    I have check engine light on. Checked codes and it has P0171 Freeze Frame reads Fuel Sys 1-. CL Fuel Sys 2-. N/A Calc Load-. 38.0 (%) ECT-. 174 (°F) STFT B1-. 15.6 (%) LTFT B1-. 15.6 (%) STFT B2-...

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