Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
Just gotta say thanks to OP for this tip. I've been struggling with this for a while. Only problem is, I wish I would have fixed this for $1.50 before replacing all three O2 sensors for $150!
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
omg, you have to be shittng me. just typed out a long reply and lost it when it hit post because it told me i had to check an "old thread" box. come on, its a sticky for christs sake!!!!!
shortened question, will this show up as a vac leak??? i tested my truck with a vac gauge and there is no sign of a leak on the gauge, and the lines hold vacuum for a long tie after the engine is shut off. with that in mind, could my problem possibly still be this elbow? |
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Wow! I have the same codes and I have tried every thing. Read this post went outside opened the hood and there it is cracked elbow. Thank you so much!
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
I have a 2000 Mazda B4000 with the same codes. I took the pics from the first post to my mechanic and he said my truck didn't have this elbow. Is this true? My mechanic has replaced the following: MAS, Intake gaskets, Computer, Plugs, Rocker cover gaskets, CAT, O2 censors. Its been smoked tested with acetylene, visually inspected for hours. Latest thing was the wiring harness, the dealer says because it is a wreckers harness they feel it is the problem. (can't verify if it is good) Then they back out of the job saying it will cost to much to continue! Like it is not cost me more then the truck is worth already! My question is could it be a wire tripping these codes and do I have this elbow? It goes to a new mechanic on Tuesday.
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
I tested my MAS sensor then cleaned the crap out of it with the store brand spray cleaner. I then had the codes cleared and it's been great since.
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
Where would this be located in my 2.3L 4-cyl??
I also have a "System Too Lean" problem (Code: P0171) PLEASE HELP! |
Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
If you need to replace the whole PCV Hose just look on e-bay and look for part number KCV-190. I paid $30 for a Genuine Ford Motorcraft Part with Tags on it and Warranty on it from Ford if anything happens to it, Ford will replace it.
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Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
I want to fix this truck myself but need advice is this forum the place for that
Sent from my iPhone using Tapatalk |
Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!
1998 4.0!
I've replaced my upper and lower intake gaskets, etc. Runs great when warm. I don't have that longer vacuum line w/ the 90 degree bend, rather many very small diameter vacuum lines. But at start she runs rough for a few minutes til she warms up. Where would that vacuum leak be? |
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