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Aaugy88066 replied to the thread Help! P0171, making me pull my hair out!.I am suspecting it may be something similar.
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Aaugy88066 reacted to JerryT's post in the thread Help! P0171, making me pull my hair out! with
Like.
I do not believe it’s a fuel injector, if so you would throw a cylinder misfire code. I had the exact same intermittent P0171 code on my... -
Aaugy88066 replied to the thread Help! P0171, making me pull my hair out!.Another update. ICV was not the issue. EVAP charcoal cannister (incl. rotten line to it), EGR valve and tubing replaced with motorcraft...
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Aaugy88066 replied to the thread Help! P0171, making me pull my hair out!.Thanks for the insight! Smoke test confirmed that I have a super tiny leak on the egr valve. So going to replace the valve and the...
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Aaugy88066 replied to the thread Help! P0171, making me pull my hair out!.I will be checking that next, post the smoke test.
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Aaugy88066 reacted to jr1under's post in the thread Help! P0171, making me pull my hair out! with Like.
What value are you getting for Long Term Fuel Trim on Bank 1?
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Aaugy88066 reacted to JamaicaJoe's post in the thread Help! P0171, making me pull my hair out! with Like.
I wonder if the CAT on the affected side Bank 1 is clogged and impeding flow of air into the combustion chambers?
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Aaugy88066 reacted to jr1under's post in the thread Help! P0171, making me pull my hair out! with Like.
I've seen this response so many times that I'm buying one. The hoses, tubes, etc. in my 1999 Exp and 2005 F150 range in age from six...
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Aaugy88066 reacted to Hamfisted's post in the thread Help! P0171, making me pull my hair out! with Like.
Smoke test the intake system. That's the best way to find vacuum leaks. With all that you've done, about the only thing left is a crack...
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Aaugy88066 replied to the thread Help! P0171, making me pull my hair out!.Hello all! Just an update, I am going to do another smoke test shortly. Also, I did replace the fuel pressure regulator as it was badly...
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Aaugy88066 posted the thread Help! P0171, making me pull my hair out! in 1st Gen Ford Expedition Engine & Performance.Hello! I took ownership of my father’s expedition last year and did a bunch of work to it getting back up to speed. It’s a 98 Expedition...
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