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  #106  
Old 02-18-2014, 08:26 AM
jwalhol jwalhol is offline
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Default 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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  #107  
Old 08-31-2014, 04:11 AM
deth502 deth502 is offline
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Default 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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  #108  
Old 09-01-2014, 04:48 PM
HYjackedxlt HYjackedxlt is offline
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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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  #109  
Old 10-11-2014, 06:11 AM
turner15 turner15 is offline
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Default 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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  #110  
Old 10-11-2014, 06:18 AM
99Ranger376 99Ranger376 is offline
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Quote:
Originally Posted by turner15 View Post
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.
You do not have the elbow because yours is an OHV motor. That elbow is only on SOHC motors. Was mass air flow sensor replaced with a Motorcraft? You can PM me because this thread is for '01+ SOHC motors
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  #111  
Old 10-12-2014, 09:29 AM
deth502 deth502 is offline
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Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Quote:
Originally Posted by turner15 View Post
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.
sounds like you have a horrible, horrible mechanic. no mechanic should make YOU throw down thousands of dollars for THEIR ineptitude in locating a problem. if i were you id find a new one immediately.
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  #112  
Old 10-13-2014, 04:27 AM
turner15 turner15 is offline
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Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Quote:
Originally Posted by deth502 View Post
sounds like you have a horrible, horrible mechanic. no mechanic should make YOU throw down thousands of dollars for THEIR ineptitude in locating a problem. if i were you id find a new one immediately.
Well they said they simply couldn't find the problem? I find out tomorrow what they are actually charging me for. I'm sure it will be in the $600 - $1000 range. What recourse do I have but to pay it and move on to another mechanic? Seems silly to pay anything as I am no further ahead then when I took it in 8 weeks ago? Cost me $400.00 for insurance too.
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  #113  
Old 10-20-2014, 11:58 AM
joseph.rupp joseph.rupp is offline
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Default 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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  #114  
Old 10-24-2014, 12:30 PM
Andy9er Andy9er is offline
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Default 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!
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  #115  
Old 11-03-2015, 09:14 PM
LivingOnTheEdge LivingOnTheEdge is offline
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Default 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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elbow, lean codes, o2 sensors, pcv, po171, po174

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