Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #46  
Old 03-16-2012, 10:32 AM
Rangerfun Rangerfun is offline
Learning to use the forums
 
Join Date: May 2011
Posts: 5
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Thank you very much for this thread

I just found out that I have this exact problem the other day.

Now.. how the hell did you get the elbow off?

I moved the radiator house and took off the throttle cover to get room to try and pull it off, I tried everything.. flat head screw driver, pb blaster etc it seems like the elbow is just embedded into the other tube. Should I just cut the cracked elbow with wire cutters or something then slide it off?

For a temporary fix I put some electrical tape over the small crack.. to my surprise this actually helped out the idle while driving but it still starts like shit it will surge to 1k rpms then drop to 300 almost stalls, does it twice in a row then goes to normal rpms.

I do want to fix it though because I have noticed a drop in gas mileage and the check engine light it on. Any suggestions on how I can get this thing off? I have the new elbow ready to go.
Reply With Quote
  #47  
Old 03-16-2012, 12:40 PM
DiRT__ DiRT__ is offline
Ford Rangers
 
Join Date: Feb 2012
Posts: 202
Default

I cut mine down one side with a razor to get it off
Reply With Quote
  #48  
Old 03-18-2012, 12:38 PM
Vinwiesel Vinwiesel is offline
Learning to use the forums
 
Join Date: Mar 2012
Posts: 2
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Thank you guys for this thread. I've been having a P0171 right bank lean code.
First I found the airbox was not latched. I latched it down, and the code came back in under 5 miles, no fix.
I installed a new air filter, cleaned the MAF sensor, and changed the oil/filter while I was at it. Code came back after 100 miles, no fix.
Next I changed the fuel filter, added Injector Cleaner to the gas, and used the security bits to remove the MAF sensor so I could clean it properly, Code came back after 120 miles, no fix.
Finally, I found this thread and sprayed some starter fluid in the area of this elbow, and the engine revved. The elbow looked fine, but I was able to pop it off by pulling, and prying the lip of it with a screwdriver on the engine side. It had a large rip in the bottom side of the hose.
The local parts stores didn't have the exact part, or any hose with an elbow of the right diameter, but O'Reilly had a stubby plastic vacuum elbow of the right diameter. Using this and a couple short sections of straight hose there was plenty of room to make a good repair.
Reply With Quote
  #49  
Old 03-18-2012, 05:50 PM
DiRT__ DiRT__ is offline
Ford Rangers
 
Join Date: Feb 2012
Posts: 202
Default

That elbow has caused many a lean code
Reply With Quote
  #50  
Old 03-20-2012, 06:30 PM
Gaz98 Gaz98 is offline
Learning to use the forums
 
Join Date: Mar 2012
Posts: 5
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

I just had this problem myself. Mine looked just like in the original pics from the OP. The elbow ran me $13 from my local autozone. Hopefully, that fixes my lean codes. Now on to the misfires...
__________________
2002 Ford Ranger XLT, 2wd, ext cab, 4.0L V6, auto
Stock truck, no mods, unless the dings count as mods...

Last edited by Gaz98; 03-20-2012 at 06:30 PM. Reason: typos
Reply With Quote
  #51  
Old 04-08-2012, 10:44 PM
Rustymetal84 Rustymetal84 is offline
Liking the Ford Ranger Forum
 
Join Date: Mar 2012
Posts: 24
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Hello I have a 2002 Ford Ranger 3.0 non flex fuel 2wd and I'm having the same check engine codes P0171&P0174 and I've already replaced my plugs,MAF sensor and cleaned my intake and check for leaks with ether everywhere. I'm about to replace my 02 sensors next. I'm running out of ideas and money.
Reply With Quote
  #52  
Old 04-18-2012, 08:48 AM
cdawall cdawall is offline
Jeep recovery vehicle
 
Join Date: Jan 2010
Posts: 2,197
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Thanks for the little guide have had the code for a while now and didn't really think to look on here for a reason why will check tonight if that was the issue.
__________________
'05 Ranger Edge SAS'd, 5.38's, D60/D60U, 38.5" TSL SX's, October 2012 TOTM, build thead
Reply With Quote
  #53  
Old 04-27-2012, 09:57 AM
stking7 stking7 is offline
Learning to use the forums
 
Join Date: Apr 2012
Posts: 1
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Would this also work on a 99 ranger?
Reply With Quote
  #54  
Old 05-06-2012, 12:06 PM
bareboatin bareboatin is offline
Learning to use the forums
 
Join Date: May 2012
Posts: 2
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Great info. I have the exact problem as you. One exception is my truck is a 1999. Another is the surging when I stop and even surging that I can notice when my speed is under 45 mph. Another is the ac quits blowing out the vents when I accelerate but will come out the vent as it should when I run at a constant higher speed 6o to 65 mph or so.
I changed out the vaucum hubs with manual and plugged the vacum line to each hub. I've double checked the plugged lines and they seem to be sealed. There should be a place closer to the vacum source to plug the vacum to the front hubs.
Now the wierd part. My mpg went to 12-13 mpg with the common 300,301,171,174 codes. I washed the engine and the mpg went to 17.8 but the surging remained. The check engine light does not come on as much and the codes have been mainly 300,301.
If it matters my Ranger is 1999,4x4,4.0,auto
Any Help would be appreciated. Thanks Chuck
Reply With Quote
  #55  
Old 05-14-2012, 02:32 PM
oregonhighgp oregonhighgp is offline
Like the Forums
 
Join Date: Dec 2009
Posts: 41
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

try checking your upper intake manifold gaskets,their are 3 gaskets that needs to be replace,4.0 have a problems as the gaskets get old ( leaking ). 22.00 bucks for the kit. 3 to 4 hrs. work time
__________________
99,Ranger XLT 4x4 4.0 auto 8.8 4.10 super cab Toreador Red 1 1/2 yrs owned, the canopy came free from a good friend. Mods. keeping the body style CLASSIC as possible,cold intake, blinker mod. line of fire, need to get better tires.
Reply With Quote
  #56  
Old 06-12-2012, 04:46 PM
ColoradoRanger ColoradoRanger is offline
ColoradoRanger
 
Join Date: Jun 2012
Posts: 5
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Thanks for great post. Drove me nuts with the flakey idle. Changed fuel & air filters, cleaned PVC, etc. Still same codes. Finally stumbled on the elbow with hole and of course was told dealer item. I wrapped some super waterproof tape around the elbow (from the local 99 cent store) and all was well on codes and idle normal again. Now I've found Forum and will be attempting to diagnose a new engine noise. By the way, buddy had a plastic water housing in the same area with a split seam and repaired it with JB Weld inside and out.
__________________
2001 Red Ranger Edge, 4 wheel drive, Automatic, 4.0 SOHC engine, King Cab, 130K miles
Reply With Quote
  #57  
Old 06-15-2012, 07:27 AM
Nyrah Nyrah is offline
Learning to use the forums
 
Join Date: Jun 2012
Posts: 3
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

New here. Love the thread, going to check mine when I get off work. Mine is a 97 6, 4.0 with 108k on it. We're in sw oklahoma. We bought this truck a couple months ago. Changed idler pulley, tensioner, alternator and all spark plugs and leads.
First time it happened to me it was hot out, maybe 105. The truck started spitting and jerking, like it was choking out, loss acceleration (no response) then dies, wont stay running if you immediately try to crank it. let it sit for a couple hours, it cooled off some outside, started fine and made it a couple miles back home. Did get the engine check light. P0171. Checked fuel pressure, ck good. We found a wet plug so changed them and leads out, they needed it anyway. Cleared code. Drove a few days np.
Son drove it, again hot outside, about 107, went about 20 miles and described what it did to me. No engine ck light though. Ford dealer couldnt duplicate and no codes. Wasnt hot out either. My question is, would this crack in the elbow cause this problem intermittently due to outside air temp?
My son is home on leave and wanting to take it back to NM with him, but i'm not going to let him do so until i know it can make the trip through the desert. Thanks for any info
K.
Reply With Quote
  #58  
Old 06-15-2012, 04:08 PM
Nyrah Nyrah is offline
Learning to use the forums
 
Join Date: Jun 2012
Posts: 3
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Also just changed fuel filter and gas cap. Looked at the pcv and its an after market one. Ao someone has already changed it. Any suggestions? Thx.
__________________
97 Ranger xlt
4.0 V6, 108k mileage
Jet engine mechanic, not a car mechanic

Last edited by Nyrah; 06-16-2012 at 08:45 PM. Reason: added info.
Reply With Quote
  #59  
Old 07-08-2012, 05:46 AM
MrB MrB is offline
Learning to use the forums
 
Join Date: Nov 2011
Posts: 8
Smile Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

I have a '97 4.0 that kept throwing these same codes. After replacing the entire EVAP system, fuel pump, coil pack, 02 sensors, and various other sensors to the tune of about $600, I finally replaced the computer.SHAZAM!, problem fixed, runs like new again.
Reply With Quote
  #60  
Old 07-14-2012, 05:12 PM
minigma minigma is offline
REGNAR DROF
 
Join Date: May 2011
Posts: 219
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Thanks for this info fixed mine right after the engine light came on. Great source of info.
__________________
2002 FX4 LVL 2, Air box mod done and CB deleted.
2M Alinco Ham radio added. 6 Turns on my Torsion Bars. Zombie Suppression Device!
Reply With Quote
Reply

Tags
elbow, lean codes, o2 sensors, pcv, po171, po174

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cylinder 4 missfire and lean Kink2227 4-Cylinder Tech 7 08-15-2015 12:39 PM
E85 and codes PO171 and PO174 garo24 3.0 Vulcan Tech 18 04-29-2014 10:21 AM
System to Lean Bank 1 & 2 TomN 4.0 SOHC / 4.0 OHV Tech 19 04-12-2011 01:12 PM
is this a normal lean? FX4 Suspension Tech 12 06-27-2010 03:13 PM
95 ranger lean.. camkos Suspension Tech 14 06-19-2009 07:19 AM